when i switch to other branch, lsp will remind me some error

[frenzywang]

hi when I switch to another branch, LSP will remind me of some error, it's some the struct is different from the last branch. so need to refresh cache, I need to manually restart the gopls then it's ok.

and have another question is, when I import an error package like I want to use the time package, but I input the timer and have xxx/xxx/timer package will import, but I don't need it, so delete this words, then the gopls was no response, even I delete the error package. I need to restart the gopls.