VSCode LSP request failed

[morigs]

Describe the bug
When opening minimal templ project in VSCode I get the following error: Request textDocument/prepareCallHierarchy failed

To Reproduce

// main.go
package main

import (
	"context"
	"os"
)

func main() {
	component := hello("john")
	component.Render(context.Background(), os.Stdout)
}

package main

templ hello(name string) {
	<div>{ name }</div>
}

Expected behavior
No error

Screenshots

Logs

[Error - 15:12:51] Request textDocument/prepareCallHierarchy failed.
  Message: no package metadata for file file:///~/templ-tests/hello.templ
  Code: 0

I replace path to file from absolute to relative.

templ info output

(✓) os [ goos=darwin goarch=arm64 ]
(✓) go [ location=/opt/homebrew/bin/go version=go version go1.23.2 darwin/arm64 ]
(✓) gopls [ location=/Users/morigs/go/bin/gopls version=golang.org/x/tools/gopls v0.16.2 ]
(✓) templ [ location=/Users/morigs/go/bin/templ version=v0.2.778 ]

Desktop (please complete the following information):

• OS: MacOS
• templ CLI version: v0.2.778
• Go version go version go1.23.2 darwin/arm64
• gopls version (golang.org/x/tools/gopls v0.16.2)

Additional context

I've tried to restart vscode, close other apps, killing all gopls and templ instances, but no luck

[a-h]

Did you create a go.mod file by running go mod init github.com/morigs/templ-tests? Without a go.mod file, the Go language server won't be able to run.

If you can create an example and share it, I'd be able to look at it.

[morigs]

Yes, I have the go.mod. The problem is still present on the latest version of VSCode and Templ extension.
Here's the reproduction:
https://github.com/morigs/templ-tests

[lllama]

I'm seeing the same thing - my VS Code workspace is a level higher than my go.mod file. Don't know if that could be related.

[a-h]

I've been unable to reproduce this. I cloned the repo, and ran go get -u github.com/a-h/templ to update the templ runtime in the project to match the version of templ I've got in my LSP.

go get -u github.com/a-h/templ
go: downloading github.com/a-h/templ v0.3.833
go: upgraded github.com/a-h/templ v0.2.778 => v0.3.833

(✓) os [ goos=darwin goarch=arm64 ]
(✓) go [ location=/run/current-system/sw/bin/go version=go version go1.23.4 darwin/arm64 ]
(✓) gopls [ location=/Users/adrian/go/bin/gopls version=golang.org/x/tools/gopls v0.17.1 ]
(✓) templ [ location=/Users/adrian/go/bin/templ version=v0.3.833 ]

No error messages for me, everything works fine. It might only show up if a particular set of features is enabled etc.

This issue references v0.2.778. https://github.com/a-h/templ/releases/tag/v0.2.793 added workspace folder initialization (see #912), which might have had an effect, but not sure.

[a-h]

Not sure if this is relevant...

https://gophers.slack.com/archives/C2B4L99RS/p1739463683666309?thread_ts=1739435803.589139&cid=C2B4L99RS