Sentry slack and github plugin fails to work

I am running sentry on Amazon EC2 as described here:

Sentry version is 9.0.0

Sentry installation was located in /usr/sentry and i installed sentry-plugins to integrate slack and github repos respectively.

Unfortunately, both of them failed.

Slack plugin failed with message:
Test Results:
“There was an internal error with the Plugin”

Github plugin failed with message when i clicked the associate identity button:
Oops! Something went wrong
It looks like you’ve hit an issue in our server API. Don’t worry though! We use Sentry to monitor Sentry and it’s likely we’re already looking into this!

Any help would be appreciated.

P.S This is my third day using sentry and i am really liking it