出现问题的页面的URL是什么？

http://localhost:8080/golang.org/x/sync/errgroup(以及其他任何)

你的用户代理是什么？

any

截图

你做了什么？

go mod init some.test/module
go get golang.org/x/sync/errgroup   # or any other
pkgsite

然后打开这个包的文档的预期URL: http://localhost:8080/golang.org/x/sync/errgroup
这种情况似乎发生在除了标准库之外的任何包上。标准库可以正常工作，例如 http://localhost:8080/net/http
如果我运行 pkgsite -cache,它确实可以工作，但那时标准库就无法工作了。

你看到了什么发生？

一个错误页面(见截图)。 pkgsite 生成了以下日志：

2024/04/11 16:09:14 Info: go/packages.Load(["all"]) loaded 0 packages from . in 7.62895ms
2024/04/11 16:09:14 Info: go/packages.Load(std) loaded 289 packages from /home/vasiliy/my.bulk/ware/go/1.22.0 in 227.310508ms
2024/04/11 16:09:14 Info: FetchDataSource: fetching some.test/module@v0.0.0
2024/04/11 16:09:14 Info: FetchDataSource: fetched some.test/module@v0.0.0 using <nil> in 27.44µs with error some.test/module@v0.0.0: not found
2024/04/11 16:09:14 Info: FetchDataSource: fetching std@latest
2024/04/11 16:09:14 Info: Listening on addr http://localhost:8080
2024/04/11 16:09:14 Info: FetchDataSource: fetched std@latest using *fetch.goPackagesModuleGetter in 141.052419ms with error <nil>
2024/04/11 16:09:24 Info: FetchDataSource: fetching golang.org/x/sync/errgroup@latest
2024/04/11 16:09:24 Info: FetchDataSource: fetched golang.org/x/sync/errgroup@latest using <nil> in 12.851µs with error golang.org/x/sync/errgroup@latest: not found
2024/04/11 16:09:24 Info: FetchDataSource: fetching golang.org/x/sync@latest
2024/04/11 16:09:24 Info: FetchDataSource: fetched golang.org/x/sync@latest using <nil> in 3.525µs with error golang.org/x/sync@latest: not found
2024/04/11 16:09:24 Info: returning 424 (Failed Dependency) for error serveUnitPage(ctx, w, r, ds, &{golang.org/x/sync/errgroup unknownModulePath latest}): 424 (Failed Dependency): <nil> (epage=&{{   <nil> false false   false false    }  <h3 class="Error-message">This page is not supported by this datasource.</h3> <nil>})

你期望看到什么？

golang.org/x/sync/errgroup 包的文档。