How can I fix this problem?

[jacklisp]

Company: backend company-tabnine error "Wrong number of arguments: #, 5" with args (prefix)

The package is now the newest now. And My Operation System is Windows 7, emacs27

[TommyX12]

Could you try to enable the debugger by doing M-x toggle-debug-on-error then trigger the error again? Once you do, please let me know of the error message that shows up.

Also, what's your company version?

[jacklisp]

' Debugger entered--Lisp error: (wrong-number-of-arguments # 5) json-serialize((:version "1.0.14" :request (:Autocomplete (:before "(r" :after ")" :filename nil :region_includes_beginning t :region_includes_end t :max_num_results 10))) :null-object nil :false-object :json-false) company-tabnine-send-request((:version "1.0.14" :request (:Autocomplete (:before "(r" :after ")" :filename nil :region_includes_beginning t :region_includes_end t :max_num_results 10)))) company-tabnine-query() company-tabnine--prefix() company-tabnine(prefix) apply(company-tabnine prefix) company-call-backend-raw(prefix) apply(company-call-backend-raw prefix) company--force-sync(company-call-backend-raw (prefix) company-tabnine) company-call-backend(prefix) company--begin-new() company--perform() company-auto-begin() company-idle-begin(#<buffer scratch> #<window 3 on scratch> 41 3) apply(company-idle-begin (#<buffer scratch> #<window 3 on scratch> 41 3)) timer-event-handler([t 24227 30805 229485 nil company-idle-begin (#<buffer scratch> #<window 3 on scratch> 41 3) nil 0]) ' by the way,My company version is "0.9.9" from gnu packages, then I reinstall Other versions: 20200324.2145 (installed), 0.9.9 (installed), 0.9.12 (gnu). The problem still the same. And My emacs is download from ' https://github.com/m-parashar/emax64/releases '

[TommyX12]

This seems to be a problem of integration with emacs 27's new json functionality. For the moment you can set company-tabnine-use-native-json to nil so that company-tabine will use the old json library.