Развернул сайт на heroku, но при попытку перейти на него выдёт Server Error (500).
Как узнать в чём дело? И куда вообще капать?
update:
Логи из bash heroku:
2020-04-26T16:54:47.386936+00:00 app[web.1]: [2020-04-26 16:54:47 +0000] [11] [INFO] Worker exiting (pid: 11)
2020-04-26T16:54:47.386942+00:00 app[web.1]: [2020-04-26 16:54:47 +0000] [10] [INFO] Worker exiting (pid: 10)
2020-04-26T16:54:47.386943+00:00 app[web.1]: [2020-04-26 16:54:47 +0000] [4] [INFO] Handling signal: term
2020-04-26T16:54:47.487627+00:00 app[web.1]: [2020-04-26 16:54:47 +0000] [4] [INFO] Shutting down: Master
2020-04-26T16:54:53.176427+00:00 app[web.1]: [2020-04-26 16:54:53 +0000] [4] [INFO] Starting gunicorn 20.0.4
2020-04-26T16:54:53.176945+00:00 app[web.1]: [2020-04-26 16:54:53 +0000] [4] [INFO] Listening at: http://0.0.0.0:48342 (4)
2020-04-26T16:54:53.177042+00:00 app[web.1]: [2020-04-26 16:54:53 +0000] [4] [INFO] Using worker: sync
2020-04-26T16:54:53.180869+00:00 app[web.1]: [2020-04-26 16:54:53 +0000] [10] [INFO] Booting worker with pid: 10
2020-04-26T16:54:53.204875+00:00 app[web.1]: [2020-04-26 16:54:53 +0000] [11] [INFO] Booting worker with pid: 11
2020-04-26T16:54:53.865350+00:00 heroku[web.1]: State changed from starting to up
2020-04-26T16:54:55.000000+00:00 app[api]: Build succeeded
2020-04-26T16:55:13.344792+00:00 app[web.1]: 10.142.64.122 - - [26/Apr/2020:16:55:13 +0000] "GET /reviews/ HTTP/1.1" 500 145 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0"
2020-04-26T16:55:13.344461+00:00 heroku[router]: at=info method=GET path="/reviews/" host=prqy.herokuapp.com request_id=98503209-aecc-46cb-abd1-a0f7a7870e07 fwd="188.32.33.3" dyno=web.1 connect=0ms service=145ms status=500 bytes=380 protocol=https
