Thank you for filing a gopls issue! Please take a look at the Troubleshooting guide, and make sure that you have provided all of the relevant information here.

Has this happened to you more than once or was it just in this instance? If it happens often, can you share a gopls log from when this happens (see how to capture logs here)? What version of gopls are you using (gopls version)?

It happens often(nearly every time), and not only to me.

$ gopls.exe version
golang.org/x/tools/gopls 0.2.0
    golang.org/x/tools/gopls@v0.2.0 h1:ddCHfScTYOG6auAcEKXCFN5iSeKSAnYcPv+7zVJBd+U=

some gopls log regarding the example func splitDhash:
Output

[Trace - 14:41:46.622 PM] Sending request 'textDocument/hover - (13)'.
Params: {"textDocument":{"uri":"file:///d%3A/code/goneat_video_content_sim_dhash_svr/src/streamsim/sim_handler.go"},"position":{"line":122,"character":10}}


[Trace - 14:41:46.665 PM] Received notification 'window/logMessage'.
Params: {"type":3,"message":"2019/11/13 14:41:46 38.0038ms for GOROOT=c:\\go GOPATH=D:\\code\\goneat_video_content_sim_dhash_svr;C:\\Users\\ravenlli\\go GO111MODULE= PWD=d:\\code\\goneat_video_content_sim_dhash_svr go \"env\" \"GOMOD\", stderr: \u003c\u003c\u003e\u003e stdout: \u003c\u003c\n\u003e\u003e\n"}


[Info  - 下午2:41:46] 2019/11/13 14:41:46 38.0038ms for GOROOT=c:\go GOPATH=D:\code\goneat_video_content_sim_dhash_svr;C:\Users\ravenlli\go GO111MODULE= PWD=d:\code\goneat_video_content_sim_dhash_svr go "env" "GOMOD", stderr: <<>> stdout: <<
>>

[Trace - 14:41:46.707 PM] Received notification 'window/logMessage'.
Params: {"type":3,"message":"2019/11/13 14:41:46 80.219ms for GOROOT=c:\\go GOPATH=D:\\code\\goneat_video_content_sim_dhash_svr;C:\\Users\\ravenlli\\go GO111MODULE= PWD=d:\\code\\goneat_video_content_sim_dhash_svr go \"list\" \"-m\" \"-json\" \"all\", stderr: \u003c\u003cgo list -m: not using modules\n\u003e\u003e stdout: \u003c\u003c\u003e\u003e\n"}


[Info  - 下午2:41:46] 2019/11/13 14:41:46 80.219ms for GOROOT=c:\go GOPATH=D:\code\goneat_video_content_sim_dhash_svr;C:\Users\ravenlli\go GO111MODULE= PWD=d:\code\goneat_video_content_sim_dhash_svr go "list" "-m" "-json" "all", stderr: <<go list -m: not using modules
>> stdout: <<>>

[Trace - 14:41:46.754 PM] Received notification 'window/logMessage'.
Params: {"type":3,"message":"2019/11/13 14:41:46 44.8674ms for GOROOT=c:\\go GOPATH=D:\\code\\goneat_video_content_sim_dhash_svr;C:\\Users\\ravenlli\\go GO111MODULE= PWD=d:\\code\\goneat_video_content_sim_dhash_svr go \"env\" \"GOPATH\", stderr: \u003c\u003c\u003e\u003e stdout: \u003c\u003cD:\\code\\goneat_video_content_sim_dhash_svr;C:\\Users\\ravenlli\\go\n\u003e\u003e\n"}


[Info  - 下午2:41:46] 2019/11/13 14:41:46 44.8674ms for GOROOT=c:\go GOPATH=D:\code\goneat_video_content_sim_dhash_svr;C:\Users\ravenlli\go GO111MODULE= PWD=d:\code\goneat_video_content_sim_dhash_svr go "env" "GOPATH", stderr: <<>> stdout: <<D:\code\goneat_video_content_sim_dhash_svr;C:\Users\ravenlli\go

    
      
      
    
  

Can you please share the full gopls log, even if it's very long? The excerpts here are not relevant to the issue you're seeing.

Here is the full gopls log.
issue35526.log

Based on your logs, it looks like gopls hasn't fully initialized by the time the change to the file comes in. We've recently made some changes to handle this - can you try installing gopls at master and reporting if you still see the same issues? To install at master, git clone https://go.googlesource.com/tools, cd into the tools/gopls directory, and run go install. If you still see the same issue at master, please attach the full logs.

This might also be related to #35584.

Closing this issue as it's now almost 2 months old. @leerayven: Please open a new issue if you are still encountering problems.