Lesson 6: Forking Networks not happening (?)

[tsopanid]

This happens with both Infura and Alchemy

I add the network:
brownie networks add development mainnet-fork-dev cmd=ganache-cli host=http://172.0.0.1 fork=https://eth-mainnet.alchemyapi.io/v2/<REMOVED_PROJECT_ID> accounts=10 mnemonic=brownie port=8545

but then when i try to deploy using:
brownie run scripts/deploy.py --network mainnet-fork-dev
my terminal hangs with this output:

Brownie v1.16.3 - Python development framework for Ethereum

BrownieFundMeProject is the active project.

Launching 'ganache-cli --accounts 10 --fork https://mainnet.infura.io/v3/<REMOVED_PROJECT_ID> --mnemonic brownie --port 8545 --hardfork istanbul'...

i waited for half an hour, but nothing happened.

the same happens when i try to deploy afeter i remove the network and use infura:
brownie networks add development mainnet-fork-dev cmd=ganache-cli host=http://172.0.0.1 fork='https://mainnet.infura.io/v3/$WEB3_INFURA_PROJECT_ID' accounts=10 mnemonic=brownie port=8545

<REMOVED_PROJECT_ID> of course is replaced by my real one when i run the command.

Any ideas?

[PatrickAlphaC]

The issue is here:

Launching 'ganache-cli --accounts 10 --fork https://mainnet.infura.io/v3/<REMOVED_PROJECT_ID> --mnemonic brownie --port 8545 --hardfork istanbul

For some reason, it's assigning infura to be your forking URL, when it should be assigning alchemy. What happens when you output brownie networks list True?

(Please don't upload your projectIds here as you've been doing. Thank you!)

[tsopanid]

Sorry i mixed things up here while posting, because i tried both infura and alchemy.
The output from above is from the infura test.
For alchemy i get:
Launching 'ganache-cli --accounts 10 --fork https://eth-mainnet.alchemyapi.io/v2/<REMOVED_PROJECT_ID> --mnemonic brownie --port 8545 --hardfork istanbul'...
The output of brownie list True is:

Ethereum
  ├─Mainnet (Infura)
  │ ├─id: mainnet
  │ ├─chainid: 1
  │ ├─explorer: https://api.etherscan.io/api
  │ ├─host: https://mainnet.infura.io/v3/$WEB3_INFURA_PROJECT_ID
  │ └─multicall2: 0x5BA1e12693Dc8F9c48aAD8770482f4739bEeD696
  ├─Ropsten (Infura)
  │ ├─id: ropsten
  │ ├─chainid: 3
  │ ├─explorer: https://api-ropsten.etherscan.io/api
  │ ├─host: https://ropsten.infura.io/v3/$WEB3_INFURA_PROJECT_ID
  │ └─multicall2: 0x5BA1e12693Dc8F9c48aAD8770482f4739bEeD696
  ├─Rinkeby (Infura)
  │ ├─id: rinkeby
  │ ├─chainid: 4
  │ ├─explorer: https://api-rinkeby.etherscan.io/api
  │ ├─host: https://rinkeby.infura.io/v3/$WEB3_INFURA_PROJECT_ID
  │ └─multicall2: 0x5BA1e12693Dc8F9c48aAD8770482f4739bEeD696
  ├─Goerli (Infura)
  │ ├─id: goerli
  │ ├─chainid: 5
  │ ├─explorer: https://api-goerli.etherscan.io/api
  │ ├─host: https://goerli.infura.io/v3/$WEB3_INFURA_PROJECT_ID
  │ └─multicall2: 0x5BA1e12693Dc8F9c48aAD8770482f4739bEeD696
  ├─Kovan (Infura)
  │ ├─id: kovan
  │ ├─chainid: 42
  │ ├─explorer: https://api-kovan.etherscan.io/api
  │ ├─host: https://kovan.infura.io/v3/$WEB3_INFURA_PROJECT_ID
  │ └─multicall2: 0x5BA1e12693Dc8F9c48aAD8770482f4739bEeD696
  └─ganache-local
    ├─id: ganache-local
    ├─chainid: 1337
    └─host: http://127.0.0.1:8545

Ethereum Classic
  ├─Mainnet
  │ ├─id: etc
  │ ├─chainid: 61
  │ ├─explorer: https://blockscout.com/etc/mainnet/api
  │ └─host: https://www.ethercluster.com/etc
  └─Kotti
    ├─id: kotti
    ├─chainid: 6
    ├─explorer: https://blockscout.com/etc/kotti/api
    └─host: https://www.ethercluster.com/kotti

Arbitrum
  └─Mainnet
    ├─id: arbitrum-main
    ├─chainid: 42161
    ├─explorer: https://api.arbiscan.io/api
    └─host: https://arb1.arbitrum.io/rpc

Binance Smart Chain
  ├─Testnet
  │ ├─id: bsc-test
  │ ├─chainid: 97
  │ ├─explorer: https://api-testnet.bscscan.com/api
  │ └─host: https://data-seed-prebsc-1-s1.binance.org:8545
  └─Mainnet
    ├─id: bsc-main
    ├─chainid: 56
    ├─explorer: https://api.bscscan.com/api
    └─host: https://bsc-dataseed.binance.org

Fantom Opera
  ├─Testnet
  │ ├─id: ftm-test
  │ ├─chainid: 4002
  │ ├─explorer: https://explorer.testnet.fantom.network
  │ └─host: https://rpc.testnet.fantom.network
  └─Mainnet
    ├─id: ftm-main
    ├─chainid: 250
    ├─explorer: https://api.ftmscan.com/api
    └─host: https://rpcapi.fantom.network

Polygon
  ├─Mainnet (Infura)
  │ ├─id: polygon-main
  │ ├─chainid: 137
  │ ├─explorer: https://api.polygonscan.com/api
  │ ├─host: https://polygon-mainnet.infura.io/v3/$WEB3_INFURA_PROJECT_ID
  │ └─multicall2: 0xc8E51042792d7405184DfCa245F2d27B94D013b6
  └─Mumbai Testnet (Infura)
    ├─id: polygon-test
    ├─chainid: 80001
    ├─explorer: https://api-testnet.polygonscan.com/api
    ├─host: https://polygon-mumbai.infura.io/v3/$WEB3_INFURA_PROJECT_ID
    └─multicall2: 0x6842E0412AC1c00464dc48961330156a07268d14

XDai
  ├─Mainnet
  │ ├─id: xdai-main
  │ ├─chainid: 100
  │ ├─explorer: https://blockscout.com/xdai/mainnet/api
  │ └─host: https://xdai.poanetwork.dev
  └─Testnet
    ├─id: xdai-test
    ├─chainid: 77
    ├─explorer: https://blockscout.com/poa/sokol/api
    └─host: https://sokol.poa.network

Development
  ├─Ganache-CLI
  │ ├─id: development
  │ ├─cmd: ganache-cli
  │ └─host: http://127.0.0.1
  │   ├─accounts: 10
  │   ├─evm_version: istanbul
  │   ├─gas_limit: 12000000
  │   ├─mnemonic: brownie
  │   └─port: 8545
  ├─Geth Dev
  │ ├─id: geth-dev
  │ ├─cmd: ethnode
  │ └─host: http://127.0.0.1
  │   └─port: 8545
  ├─Hardhat
  │ ├─id: hardhat
  │ ├─cmd: npx hardhat node
  │ └─host: http://127.0.0.1
  │   └─port: 8545
  ├─Hardhat (Mainnet Fork)
  │ ├─id: hardhat-fork
  │ ├─cmd: npx hardhat node
  │ ├─host: http://127.0.0.1
  │ └─timeout: 120
  │   ├─fork: mainnet
  │   └─port: 8545
  ├─Ganache-CLI (Mainnet Fork)
  │ ├─id: mainnet-fork
  │ ├─cmd: ganache-cli
  │ ├─host: http://127.0.0.1
  │ └─timeout: 120
  │   ├─accounts: 10
  │   ├─evm_version: istanbul
  │   ├─fork: mainnet
  │   ├─gas_limit: 12000000
  │   ├─mnemonic: brownie
  │   └─port: 8545
  ├─Ganache-CLI (BSC-Mainnet Fork)
  │ ├─id: bsc-main-fork
  │ ├─cmd: ganache-cli
  │ ├─host: http://127.0.0.1
  │ └─timeout: 120
  │   ├─accounts: 10
  │   ├─evm_version: istanbul
  │   ├─fork: bsc-main
  │   ├─gas_limit: 12000000
  │   ├─mnemonic: brownie
  │   └─port: 8545
  ├─Ganache-CLI (FTM-Mainnet Fork)
  │ ├─id: ftm-main-fork
  │ ├─cmd: ganache-cli
  │ ├─host: http://127.0.0.1
  │ └─timeout: 120
  │   ├─accounts: 10
  │   ├─evm_version: istanbul
  │   ├─fork: ftm-main
  │   ├─gas_limit: 12000000
  │   ├─mnemonic: brownie
  │   └─port: 8545
  ├─Ganache-CLI (Polygon-Mainnet Fork)
  │ ├─id: polygon-main-fork
  │ ├─cmd: ganache-cli
  │ ├─host: http://127.0.0.1
  │ └─timeout: 120
  │   ├─accounts: 10
  │   ├─evm_version: istanbul
  │   ├─fork: polygon-main
  │   ├─gas_limit: 20000000
  │   ├─mnemonic: brownie
  │   └─port: 8545
  ├─Ganache-CLI (XDai-Mainnet Fork)
  │ ├─id: xdai-main-fork
  │ ├─cmd: ganache-cli
  │ ├─host: http://127.0.0.1
  │ └─timeout: 120
  │   ├─accounts: 10
  │   ├─evm_version: istanbul
  │   ├─fork: xdai-main
  │   ├─gas_limit: 20000000
  │   ├─mnemonic: brownie
  │   └─port: 8545
  └─mainnet-fork-dev
    ├─id: mainnet-fork-dev
    ├─cmd: ganache-cli
    └─host: http://172.0.0.1
      ├─accounts: 10
      ├─fork: https://eth-mainnet.alchemyapi.io/v2/<REMOVED_PROJECT_ID>
      ├─mnemonic: brownie
      └─port: 854

[PatrickAlphaC]

Welp.... if you ever come across what got it to work, and want to come back and update this, let me know!

Great work!

[harishvishwakarma]

Stuck with the same issue

brownie run scripts/deploy.py --network mainnet-forkBrownie v1.17.0 - Python development framework for Ethereum

SmartcontractLotteryProject is the active project.

Launching 'ganache-cli --accounts 10 --mnemonic brownie --port 8545 --hardfork istanbul'...
Terminating local RPC client...
  File "brownie/_cli/__main__.py", line 64, in main
    importlib.import_module(f"brownie._cli.{cmd}").main()
  File "brownie/_cli/run.py", line 44, in main
    network.connect(CONFIG.argv["network"])
  File "brownie/network/main.py", line 50, in connect
    rpc.launch(active["cmd"], **active["cmd_settings"])
  File "brownie/network/rpc/__init__.py", line 95, in launch
    raise RPCConnectionError(cmd, self.process, uri)
  File "brownie/exceptions.py", line 41, in __init__
    f"\n\nCommand: {cmd}\nURI: {uri}\nExit Code: {proc.poll()}"
AttributeError: 'NoneType' object has no attribute 'poll'

[harishvishwakarma]

@PatrickAlphaC Do you know the solution to this one?

[harishvishwakarma]

Ahh! I know what went wrong. Here is the solution for others like me.

The problem is in the command that I ran for creating the 'mainnet-fork' network.

brownie networks add development mainnet-fork cmd=ganache-cli host=https://eth-mainnet.alchemyapi.io/XXX accounts=10 mnemonic=brownie port=8545

This is using wrong host and is missing the fork. The command should rather have been

brownie networks add development mainnet-fork cmd=ganache-cli host=http://127.0.0.1 fork=https://eth-mainnet.alchemyapi.io/XXX accounts=10 mnemonic=brownie port=8545

[PatrickAlphaC]

nice work!

[mohzourob]

Hi,
I have add the network used this command
brownie networks add development mainnet-fork-dev cmd=ganache-cli host=http://127.0.0.1 fork=https://eth-mainnet.alchemyapi.io/v2/xxxx accounts=10 mnemonic=brownie port=8545

when I run brownie run scripts/deploy.py --network mainnet-fork-dev Not working, pedding and when I cancel the request give me this error

^CTraceback (most recent call last):
File "/home/dashzou/.local/bin/brownie", line 8, in
sys.exit(main())
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/brownie/_cli/main.py", line 64, in main
importlib.import_module(f"brownie._cli.{cmd}").main()
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/brownie/_cli/run.py", line 44, in main
network.connect(CONFIG.argv["network"])
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/brownie/network/main.py", line 50, in connect
rpc.launch(active["cmd"], **active["cmd_settings"])
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/brownie/network/rpc/init.py", line 83, in launch
if web3.isConnected():
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/brownie/network/web3.py", line 115, in isConnected
return super().isConnected()
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/web3/main.py", line 327, in isConnected
return self.provider.isConnected()
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/web3/providers/base.py", line 103, in isConnected
response = self.make_request(RPCEndpoint('web3_clientVersion'), [])
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/web3/providers/rpc.py", line 88, in make_request
raw_response = make_post_request(
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/web3/_utils/request.py", line 48, in make_post_request
response = session.post(endpoint_uri, data=data, *args, **kwargs) # type: ignore
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/requests/sessions.py", line 590, in post
return self.request('POST', url, data=data, json=json, **kwargs)
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/requests/sessions.py", line 542, in request
resp = self.send(prep, **send_kwargs)
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/requests/sessions.py", line 655, in send
r = adapter.send(request, **kwargs)
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/requests/adapters.py", line 439, in send
resp = conn.urlopen(
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/urllib3/connectionpool.py", line 699, in urlopen
httplib_response = self._make_request(
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/urllib3/connectionpool.py", line 445, in _make_request
six.raise_from(e, None)
File "", line 3, in raise_from
File "/home/dashzou/.local/pipx/venvs/eth-brownie/lib/python3.9/site-packages/urllib3/connectionpool.py", line 440, in _make_request
httplib_response = conn.getresponse()
File "/usr/lib/python3.9/http/client.py", line 1371, in getresponse
response.begin()
File "/usr/lib/python3.9/http/client.py", line 319, in begin
version, status, reason = self._read_status()
File "/usr/lib/python3.9/http/client.py", line 280, in _read_status
line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
File "/usr/lib/python3.9/socket.py", line 704, in readinto
return self._sock.recv_into

[mohzourob]

@PatrickAlphaC
Could u help me with this issue pls ?

[mohzourob]

@PatrickAlphaC fixed, when I used socket wss://eth-mainnet.alchemyapi.io/v2/xx worked fine,

[PatrickAlphaC]

perfect!

[stephenthumb]

Confirmed dash7ou's solution. The Alchemy websockets api url works fine in Brownie just replacing the http url directly in the fork value for the network definitiion. I tested the HTTP URL endpoint with Web3 directly and was able to call ETH block numbers and gas prices so unsure what Brownie is doing specifically that doesn't work.

brownie networks add development mainnet-fork-dev cmd=ganache-cli host=http://127.0.0.1 fork='wss://eth-mainnet.alchemyapi.io/v2/xxxxxxxxxxxxxx' accounts=10 mnemonic=brownie port=8545

[stephenthumb]

Also found after getting the successful connection using the websockets url the http endpoint started working also.

[gorkemkeles]

Hi all, I have the same error while running (AttributeError: 'NoneType' object has no attribute 'poll')

brownie run scripts/deploy.py --network mainnet-fork-dev

Also, I'm using Alchemy btw.
May I ask how can I remove a mainnet-fork-dev from brownie network list then set it again? Because when I set "port=7545" instead of "8545" because it was 7545 in my Ganache!

[cromewar]

Hi @gorkemkeles deleting a network is pretty easy, I've created a new network called "testone"

For delete it I must type:

brownie networks delete testone (mainnet-fork-dev in your case) and as you can see the network is not there anymore.

[gorkemkeles]

@cromewar thank you so much

[PatrickAlphaC]

@cromewar a beast :)

[Mach0p]

Hi, did anyone find the solution to this? I'm running into the same problem as it seems it's not forking correctly, and therefor not launching the mainnet-fork-dev network (Timestamp from the video 6:01:45)
@PatrickAlphaC @tsopanid

ganache --version
ganache v7.0.3 (@ganache/cli: 0.1.4, @ganache/core: 0.1.4)

brownie --version
INFO: Could not find files for the given pattern(s).
Brownie v1.16.4 - Python development framework for Ethereum

python --version
Python 3.10.4

I added mainnet-fork-dev with brownie networks add development mainnet-fork-dev cmd=ganache-cli host=https://127.0.0.1 fork='https://eth-mainnet.alchemyapi.io/v2/$MY_KEY$' accounts=10 mnemonic=brownie port=8545
(I tried the fork url with ', " and same result.)

When running networks list true i get :

Ethereum
  ├─Mainnet (Infura)
  │ ├─id: mainnet
  │ ├─chainid: 1
  │ ├─explorer: https://api.etherscan.io/api
  │ ├─host: https://mainnet.infura.io/v3/$WEB3_INFURA_PROJECT_ID
  │ └─multicall2: 0x5BA1e12693Dc8F9c48aAD8770482f4739bEeD696
  ├─Ropsten (Infura)
  │ ├─id: ropsten
  │ ├─chainid: 3
  │ ├─explorer: https://api-ropsten.etherscan.io/api
  │ ├─host: https://ropsten.infura.io/v3/$WEB3_INFURA_PROJECT_ID
  │ └─multicall2: 0x5BA1e12693Dc8F9c48aAD8770482f4739bEeD696
  ├─Rinkeby (Infura)
  │ ├─id: rinkeby
  │ ├─chainid: 4
  │ ├─explorer: https://api-rinkeby.etherscan.io/api
  │ ├─host: https://rinkeby.infura.io/v3/$WEB3_INFURA_PROJECT_ID
  │ └─multicall2: 0x5BA1e12693Dc8F9c48aAD8770482f4739bEeD696
  ├─Goerli (Infura)
  │ ├─id: goerli
  │ ├─chainid: 5
  │ ├─explorer: https://api-goerli.etherscan.io/api
  │ ├─host: https://goerli.infura.io/v3/$WEB3_INFURA_PROJECT_ID
  │ └─multicall2: 0x5BA1e12693Dc8F9c48aAD8770482f4739bEeD696
  ├─Kovan (Infura)
  │ ├─id: kovan
  │ ├─chainid: 42
  │ ├─explorer: https://api-kovan.etherscan.io/api
  │ ├─host: https://kovan.infura.io/v3/$WEB3_INFURA_PROJECT_ID
  │ └─multicall2: 0x5BA1e12693Dc8F9c48aAD8770482f4739bEeD696
  └─ganache-local
    ├─id: ganache-local
    ├─chainid: 5777
    └─host: http://127.0.0.1:8545

Ethereum Classic
  ├─Mainnet
  │ ├─id: etc
  │ ├─chainid: 61
  │ ├─explorer: https://blockscout.com/etc/mainnet/api
  │ └─host: https://www.ethercluster.com/etc
  └─Kotti
    ├─id: kotti
    ├─chainid: 6
    ├─explorer: https://blockscout.com/etc/kotti/api
    └─host: https://www.ethercluster.com/kotti

Arbitrum
  └─Mainnet
    ├─id: arbitrum-main
    ├─chainid: 42161
    ├─explorer: https://api.arbiscan.io/api
    ├─host: https://arb1.arbitrum.io/rpc
    └─multicall2: 0x5B5CFE992AdAC0C9D48E05854B2d91C73a003858

Binance Smart Chain
  ├─Testnet
  │ ├─id: bsc-test
  │ ├─chainid: 97
  │ ├─explorer: https://api-testnet.bscscan.com/api
  │ └─host: https://data-seed-prebsc-1-s1.binance.org:8545
  └─Mainnet
    ├─id: bsc-main
    ├─chainid: 56
    ├─explorer: https://api.bscscan.com/api
    └─host: https://bsc-dataseed.binance.org

Fantom Opera
  ├─Testnet
  │ ├─id: ftm-test
  │ ├─chainid: 4002
  │ ├─explorer: https://explorer.testnet.fantom.network
  │ └─host: https://rpc.testnet.fantom.network
  └─Mainnet
    ├─id: ftm-main
    ├─chainid: 250
    ├─explorer: https://api.ftmscan.com/api
    └─host: https://rpcapi.fantom.network

Polygon
  ├─Mainnet (Infura)
  │ ├─id: polygon-main
  │ ├─chainid: 137
  │ ├─explorer: https://api.polygonscan.com/api
  │ ├─host: https://polygon-mainnet.infura.io/v3/$WEB3_INFURA_PROJECT_ID
  │ └─multicall2: 0xc8E51042792d7405184DfCa245F2d27B94D013b6
  └─Mumbai Testnet (Infura)
    ├─id: polygon-test
    ├─chainid: 80001
    ├─explorer: https://api-testnet.polygonscan.com/api
    ├─host: https://polygon-mumbai.infura.io/v3/$WEB3_INFURA_PROJECT_ID
    └─multicall2: 0x6842E0412AC1c00464dc48961330156a07268d14

XDai
  ├─Mainnet
  │ ├─id: xdai-main
  │ ├─chainid: 100
  │ ├─explorer: https://blockscout.com/xdai/mainnet/api
  │ └─host: https://xdai.poanetwork.dev
  └─Testnet
    ├─id: xdai-test
    ├─chainid: 77
    ├─explorer: https://blockscout.com/poa/sokol/api
    └─host: https://sokol.poa.network

Development
  ├─Ganache-CLI
  │ ├─id: development
  │ ├─cmd: ganache-cli
  │ └─host: http://127.0.0.1
  │   ├─accounts: 10
  │   ├─evm_version: istanbul
  │   ├─gas_limit: 12000000
  │   ├─mnemonic: brownie
  │   └─port: 8545
  ├─Geth Dev
  │ ├─id: geth-dev
  │ ├─cmd: ethnode
  │ └─host: http://127.0.0.1
  │   └─port: 8545
  ├─Hardhat
  │ ├─id: hardhat
  │ ├─cmd: npx hardhat node
  │ └─host: http://127.0.0.1
  │   └─port: 8545
  ├─Hardhat (Mainnet Fork)
  │ ├─id: hardhat-fork
  │ ├─cmd: npx hardhat node
  │ ├─host: http://127.0.0.1
  │ └─timeout: 120
  │   ├─fork: mainnet
  │   └─port: 8545
  ├─Ganache-CLI (BSC-Mainnet Fork)
  │ ├─id: bsc-main-fork
  │ ├─cmd: ganache-cli
  │ ├─host: http://127.0.0.1
  │ └─timeout: 120
  │   ├─accounts: 10
  │   ├─evm_version: istanbul
  │   ├─fork: bsc-main
  │   ├─gas_limit: 12000000
  │   ├─mnemonic: brownie
  │   └─port: 8545
  ├─Ganache-CLI (FTM-Mainnet Fork)
  │ ├─id: ftm-main-fork
  │ ├─cmd: ganache-cli
  │ ├─host: http://127.0.0.1
  │ └─timeout: 120
  │   ├─accounts: 10
  │   ├─evm_version: istanbul
  │   ├─fork: ftm-main
  │   ├─gas_limit: 12000000
  │   ├─mnemonic: brownie
  │   └─port: 8545
  ├─Ganache-CLI (Polygon-Mainnet Fork)
  │ ├─id: polygon-main-fork
  │ ├─cmd: ganache-cli
  │ ├─host: http://127.0.0.1
  │ └─timeout: 120
  │   ├─accounts: 10
  │   ├─evm_version: istanbul
  │   ├─fork: polygon-main
  │   ├─gas_limit: 20000000
  │   ├─mnemonic: brownie
  │   └─port: 8545
  ├─Ganache-CLI (XDai-Mainnet Fork)
  │ ├─id: xdai-main-fork
  │ ├─cmd: ganache-cli
  │ ├─host: http://127.0.0.1
  │ └─timeout: 120
  │   ├─accounts: 10
  │   ├─evm_version: istanbul
  │   ├─fork: xdai-main
  │   ├─gas_limit: 20000000
  │   ├─mnemonic: brownie
  │   └─port: 8545
  ├─mainnet-fork
  │ ├─id: mainnet-fork
  │ ├─cmd: ganache-cli
  │ └─host: http://127.0.0.1
  │   ├─accounts: 10
  │   ├─mnemonic: brownie
  │   └─port: 8545
  └─mainnet-fork-dev
    ├─id: mainnet-fork-dev
    ├─cmd: ganache-cli
    └─host: https://127.0.0.1
      ├─accounts: 10
      ├─fork: https://eth-mainnet.alchemyapi.io/v2/$MY_KEY$
      ├─mnemonic: brownie
      └─port: 8545

Then by running : brownie console --network mainnet-fork-dev I get:

INFO: Could not find files for the given pattern(s).
Brownie v1.16.4 - Python development framework for Ethereum

BrownieFundMeProject is the active project.

Launching 'ganache-cli.cmd --accounts 10 --fork https://eth-mainnet.alchemyapi.io/v2/$MY_KEY$ --mnemonic brownie --port 8545 --hardfork istanbul'...

And it just stays there...I tried with the WSS http address and the same happens. By also running deploy.py it shows the same as above.
Looking at Alchemy dashboard I can see requests coming in.

[cromewar]

as you are trying to use brownie console and your key format is $My_Key$ be sure to export the env variable to path on windows before running this.
Be sure to have closes ganache ui before oppening this, and also is preferable to use python version 3.8 or 3.9 instead of 3.10.

[Mach0p]

Hi crome war, thks for your help!
I use the real key, in the url $my_key$ was to not add it publicly here. Ganache UI is closed. And i just went though installing python 3.9.5 and the networks keeps on launching, but there s a slight difference in the message:
Launching 'ganache-cli.cmd --chain.vmErrorsOnRPCResponse true --wallet.totalAccounts 10 --fork.url https://eth-mainnet.alchemyapi.io/v2/$MY_KEY$ --wallet.mnemonic brownie --server.port 8545 --hardfork istanbul'...

[cromewar]

Ok you made a step on the correct direction, the error is now complaining for the rpc client, does ganache-cli runs properly by it's own?
Additionally I strongly suggest you to go to your home folder path, and delete the .brownie folder this will erase all the configs and you may add the networks again. This may help.

[formulaRoot]

Running into an issue where its asking for the Explorer API

Value Error: Explorer API not set for this network

[cromewar]

The API of etherscan is just for Kovan, Rinkeby and Mainnet, if you deploy to a fork or to development, be sure the verify is set up as False.

[formulaRoot]

Got it! Thanks @cromewar Appreciate it!