chore(pricefeed)-add-solana-anchor (#522)

* chore(pricefeed)-add-solana-anchor

* pre-commit

* requested changes

* pre-commit

* fix more stuff

* update link

---------

Co-authored-by: Guillermo Bescos <[email protected]>

Author: aditya520

pages/price-feeds/troubleshoot.mdx

@@ -4,3 +4,4 @@ The following guide helps users integrating pyth price feeds to solve common iss
 Please select the component where you are facing the issue to get the troubleshooting steps.
 
 - [EVM Price Feeds Contract](troubleshoot/evm)
+- [SVM Price Feeds Contract](troubleshoot/svm)

pages/price-feeds/troubleshoot/_meta.json

@@ -1,3 +1,4 @@
 {
-  "evm": "EVM Price Feeds Contract"
+  "evm": "EVM Price Feeds Contract",
+  "svm": "SVM Price Feeds Contract"
 }

pages/price-feeds/troubleshoot/svm.mdx

@@ -0,0 +1,18 @@
+# Troubleshoot Solana Price Feeds Contract
+
+This reference page is designed to help you troubleshoot common issues you may encounter when using Pyth Price Feeds on SVM chains.
+Follow the steps provided below to diagnose and resolve the issue.
+
+1. `error[E0277]: the trait bound PriceUpdateV2: anchor_lang::AccountDeserialize is not satisfied{:rust}`
+
+   This error happens when a program using the [`pyth-solana-receiver-sdk`](https://github.com/pyth-network/pyth-crosschain/tree/main/target_chains/solana/pyth_solana_receiver_sdk) fails to compile. It is caused by an `anchor-lang` version mismatch.
+   Make sure the transitive version of `anchor-lang` brought by `pyth-solana-receiver-sdk`
+   matches the version of `anchor-lang` of your program's `Cargo.toml`.
+
+   You can fix it by following these steps:
+
+   - Check the version of `anchor-lang` in your [`Cargo.toml`](https://github.com/guibescos/anchor-pyth/blob/broken-build/programs/anchor-pyth/Cargo.toml) (in the example `0.29.0{:js}`) call it `x.y.z`
+   - Check the version of `anchor-lang` in the `pyth-solana-receiver-sdk` tree in [`Cargo.lock`](https://github.com/guibescos/anchor-pyth/blob/broken-build/Cargo.lock#L1400) (in the example `0.30.1{:js}`) call it `a.b.c`
+   - Run `cargo update -p [email protected] --precise x.y.z{:bash}`
+     replacing `a.b.c` and `x.y.z` by the versions in the previous steps. For example:\
+     `cargo update -p [email protected] --precise 0.29.0{:bash}`

pages/price-feeds/use-real-time-data/solana.mdx

@@ -14,14 +14,19 @@ Pyth provides two SDKs for Solana applications to cover the on- and off-chain po
 
 ### Rust SDK
 
-The [pyth-solana-receiver-sdk crate](https://github.com/pyth-network/pyth-crosschain/tree/main/target_chains/solana/pyth_solana_receiver_sdk) can be used to consume Pyth prices inside Solana programs written in Rust.
+The [pyth-solana-receiver-sdk](https://github.com/pyth-network/pyth-crosschain/tree/main/target_chains/solana/pyth_solana_receiver_sdk) crate can be used to consume Pyth prices inside Solana programs written in Rust.
 Add this crate to the dependencies section of your `Cargo.toml` file:
 
 ```toml copy
 [dependencies]
 pyth-solana-receiver-sdk ="x.y.z" # get the latest version from https://crates.io/crates/pyth-solana-receiver-sdk
 ```
 
+<Callout type="warning" emoji="⚓">
+At the time of writing, [pyth-solana-receiver-sdk](https://github.com/pyth-network/pyth-crosschain/tree/main/target_chains/solana/pyth_solana_receiver_sdk) is compatible with Anchor `v0.28.0{:js}`, `v0.29.0{:js}`, and `v0.30.1{:js}`.
+If you are on `v0.30.0{:js}` or any other version, please move to `v0.30.1{:js}`.
+</Callout>
+
 ### Typescript SDK
 
 Pyth provides two Typescript packages, [@pythnetwork/price-service-client](https://github.com/pyth-network/pyth-crosschain/tree/main/price_service/client/js) and [@pythnetwork/pyth-solana-receiver](https://github.com/pyth-network/pyth-crosschain/tree/main/target_chains/solana/sdk/js/pyth_solana_receiver), for fetching Pyth prices and submitting them to the blockchain respectively.