Critical Error during launch "undefined method `join' for nil"

Hey All, Over the past few days I have struggled to launch sharetribe on Heroku. Right now I am recieving the following errors.

On local host:

"
[29401] - Worker 1 (pid: 29413) booted, phase: 0
[29401] - Worker 0 (pid: 29411) booted, phase: 0
Error in reactor loop escaped: undefined method `join’ for nil: NilClass (NoMethodError)

Error in reactor loop escaped: undefined method `join’ for nil: NilClass (NoMethodError)
"

Heroku Logs:

2019-08-07T20:13:02.800609+00:00 heroku[router]: at=error code=H10 desc=“App crashed” method=GET path=“/favicon.ico” host=gentle-cove-94400.herokuapp.com request_id=0b46de2e-86b3-48eb-a607-5389301e929c fwd=“107.13.120.176” dyno= connect= service= status=503 bytes= protocol=https

Are these two problems related? if so please help me with suggestions on how to debug this. I am new to sharetribe any information will be useful.

Thanks

Not too sure about your local host problem, looks unrelated

On heroku can you check if PASSENGER_MAX_POOL_SIZE env var is set? by running
heroku config
If its not set then you need to run
heroku config:set PASSENGER_MAX_POOL_SIZE=3

Value of PASSENGER_MAX_POOL_SIZE is down to you i’ve set mine to 3

Hope this helps