Rename doesn't work for Golang Language Server

1) Configure language server gopls (attached screen)

2) Open go project

3) Try to rename symbol

Couldn't rename symbol with error 

LanguageClient GoLang: Error 0: invalid identifier to rename: "()"

 Tested on

OS X 10.15.5

Qt creator 4.13.2

go 1.15

gopls 0.4.4