Process completed with exit code 1.

:pg.get_members/2 is undefined (module :pg is not available or is yet to be defined)

:pg.join/3 is undefined (module :pg is not available or is yet to be defined)

:pg.start_link/1 is undefined (module :pg is not available or is yet to be defined)

@behaviour Bandit.PrimitiveOps.WebSocket does not exist (in module Bandit.PrimitiveOps.WebSocket)

got "@impl true" for function ws_mask/2 but no behaviour specifies such callback. There are no known callbacks, please specify the proper @behaviour and make sure it defines callbacks