Unsupported target group "default"

[issenn]

It fails when I use group "default" in docker-bake.hcl

group "default" {
  targets = [
    "main"
  ]
}

code:

.github/workflows/flowzone.yml#L1407

log:

# Build docker publish matrix

Error: Unsupported target: default
    at eval (eval at callAsyncFunction (/home/runner/work/_actions/actions/github-script/60a0d83039c74a4aee543508d2ffcb1c3799cdea/dist/index.js:35424:16), <anonymous>:31:13)
    at Array.map (<anonymous>)
    at eval (eval at callAsyncFunction (/home/runner/work/_actions/actions/github-script/60a0d83039c74a4aee543508d2ffcb1c3799cdea/dist/index.js:35424:16), <anonymous>:28:25)
    at callAsyncFunction (/home/runner/work/_actions/actions/github-script/60a0d83039c74a4aee543508d2ffcb1c3799cdea/dist/index.js:35425:12)
    at main (/home/runner/work/_actions/actions/github-script/60a0d83039c74a4aee543508d2ffcb1c3799cdea/dist/index.js:35522:26)
    at /home/runner/work/_actions/actions/github-script/60a0d83039c74a4aee543508d2ffcb1c3799cdea/dist/index.js:35497:1
    at /home/runner/work/_actions/actions/github-script/60a0d83039c74a4aee543508d2ffcb1c3799cdea/dist/index.js:35553:3
    at Object.<anonymous> (/home/runner/work/_actions/actions/github-script/60a0d83039c74a4aee543508d2ffcb1c3799cdea/dist/index.js:35556:12)
    at Module._compile (node:internal/modules/cjs/loader:1469:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1548:10)
Error: Unhandled error: Error: Unsupported target: default