relation "gsheets_accesscredentials" does not exist?

[gookenhaim]

ProgrammingError at /gsheets/auth-success/ relation "gsheets_accesscredentials" does not exist LINE 1: ..., "gsheets_accesscredentials"."created_time" FROM "gsheets_a...

hi! I visited /gsheets/authorize and the login form and etc showed up well and after that scope problem arose but I applied the solution in this board and it's gone but now the above error turned up. What should I do? thanks for your great package!

[AzeeDev]

@gookenhaim did you added 'gsheets' in your INSTALLED_APPS =[] run migrations and then try to authenticate