django報錯must be str, not dict

Django出現報錯

TypeError at /main/mmp/workticket/create/app/
must be str, not dict
Request Method: GET
Request URL:    http://127.0.0.1:8000/main/mmp/workticket/create/app/
Django Version: 2.1
Exception Type: TypeError
Exception Value:    must be str, not dict

最後定位的報錯是

D:\GITLAB\cloudnest\cloudnest\mmp\views.py in get
                print('Level1:' + x) ...
▶ Local vars

明顯的出現在print上，x是一個字典，不能直接打印，需要打印的話，強制轉換爲str類型。