Cannot make API calls

Here is a full error message:

{"id":"api.context.404.app_error","message":"Sorry, we could not find the page.","detailed_error":"There doesn't appear to be an api call for the url='/api/v3/channels/[CHANNEL_ID OBTAINED FROM PSQL DATABASE]/posts/page/0/5'.  Typo? are you missing a team_id or user_id as part of the url?","request_id":"","status_code":404,"is_oauth":false}