I'm having the following error message:
at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=pets-vs-dogs.herokuapp.com request_id=e191ffa5-3d2d-4ba5-a70f-e5eab32213d8 fwd="181.46.165.15" dyno= connect= service= status=503 bytes= protocol=https
This happens when I try to deploy my project to Heroku,I even tried to only deploy a "hello world" and got the same message.
In case you want, you can find my code here
UPDATE: HERE'S THE FULL LOG
2020-07-21T17:13:34.866583+00:00 heroku[web.1]: State changed from crashed to starting
2020-07-21T17:13:49.120815+00:00 heroku[web.1]: Starting process with command
gunicorn app:app
2020-07-21T17:13:52.011195+00:00 heroku[web.1]: Process exited with status 1
2020-07-21T17:13:52.052869+00:00 heroku[web.1]: State changed from starting to crashed
2020-07-21T17:13:52.055989+00:00 heroku[web.1]: State changed from crashed to starting
2020-07-21T17:13:51.736140+00:00 app[web.1]: [2020-07-21 17:13:51 +0000] [4] [INFO] Starting gunicorn 20.0.4
2020-07-21T17:13:51.737227+00:00 app[web.1]: [2020-07-21 17:13:51 +0000] [4] [INFO] Listening at: http://0.0.0.0:26985 (4)
2020-07-21T17:13:51.737435+00:00 app[web.1]: [2020-07-21 17:13:51 +0000] [4] [INFO] Using worker: sync
2020-07-21T17:13:51.744894+00:00 app[web.1]: [2020-07-21 17:13:51 +0000] [10] [INFO] Booting worker with pid: 10
2020-07-21T17:13:51.760039+00:00 app[web.1]: [2020-07-21 17:13:51 +0000] [10] [ERROR] Exception in worker process
2020-07-21T17:13:51.760041+00:00 app[web.1]: Traceback (most recent call last):
2020-07-21T17:13:51.760041+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
2020-07-21T17:13:51.760042+00:00 app[web.1]: worker.init_process()
2020-07-21T17:13:51.760042+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/workers/base.py", line 119, in init_process
2020-07-21T17:13:51.760043+00:00 app[web.1]: self.load_wsgi()
2020-07-21T17:13:51.760043+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
2020-07-21T17:13:51.760044+00:00 app[web.1]: self.wsgi = self.app.wsgi()
2020-07-21T17:13:51.760044+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/base.py", line 67, in wsgi
2020-07-21T17:13:51.760044+00:00 app[web.1]: self.callable = self.load()
2020-07-21T17:13:51.760045+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
2020-07-21T17:13:51.760045+00:00 app[web.1]: return self.load_wsgiapp()
2020-07-21T17:13:51.760046+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
2020-07-21T17:13:51.760046+00:00 app[web.1]: return util.import_app(self.app_uri)
2020-07-21T17:13:51.760047+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/util.py", line 358, in import_app
2020-07-21T17:13:51.760047+00:00 app[web.1]: mod = importlib.import_module(module)
2020-07-21T17:13:51.760047+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/importlib/init.py", line 127, in import_module
2020-07-21T17:13:51.760048+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
2020-07-21T17:13:51.760048+00:00 app[web.1]: File "", line 1006, in _gcd_import
2020-07-21T17:13:51.760049+00:00 app[web.1]: File "", line 983, in _find_and_load
2020-07-21T17:13:51.760049+00:00 app[web.1]: File "", line 965, in _find_and_load_unlocked
2020-07-21T17:13:51.760315+00:00 app[web.1]: ModuleNotFoundError: No module named 'app'
2020-07-21T17:13:51.760859+00:00 app[web.1]: [2020-07-21 17:13:51 +0000] [10] [INFO] Worker exiting (pid: 10)
2020-07-21T17:13:51.831011+00:00 app[web.1]: [2020-07-21 17:13:51 +0000] [11] [INFO] Booting worker with pid: 11
2020-07-21T17:13:51.843563+00:00 app[web.1]: [2020-07-21 17:13:51 +0000] [11] [ERROR] Exception in worker process
2020-07-21T17:13:51.843565+00:00 app[web.1]: Traceback (most recent call last):
2020-07-21T17:13:51.843566+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
2020-07-21T17:13:51.843566+00:00 app[web.1]: worker.init_process()
2020-07-21T17:13:51.843566+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/workers/base.py", line 119, in init_process
2020-07-21T17:13:51.843567+00:00 app[web.1]: self.load_wsgi()
2020-07-21T17:13:51.843567+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
2020-07-21T17:13:51.843568+00:00 app[web.1]: self.wsgi = self.app.wsgi()
2020-07-21T17:13:51.843568+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/base.py", line 67, in wsgi
2020-07-21T17:13:51.843569+00:00 app[web.1]: self.callable = self.load()
2020-07-21T17:13:51.843569+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
2020-07-21T17:13:51.843569+00:00 app[web.1]: return self.load_wsgiapp()
2020-07-21T17:13:51.843570+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
2020-07-21T17:13:51.843570+00:00 app[web.1]: return util.import_app(self.app_uri)
2020-07-21T17:13:51.843571+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/util.py", line 358, in import_app
2020-07-21T17:13:51.843571+00:00 app[web.1]: mod = importlib.import_module(module)
2020-07-21T17:13:51.843572+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/importlib/init.py", line 127, in import_module
2020-07-21T17:13:51.843572+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
2020-07-21T17:13:51.843573+00:00 app[web.1]: File "", line 1006, in _gcd_import
2020-07-21T17:13:51.843573+00:00 app[web.1]: File "", line 983, in _find_and_load
2020-07-21T17:13:51.843573+00:00 app[web.1]: File "", line 965, in _find_and_load_unlocked
2020-07-21T17:13:51.843676+00:00 app[web.1]: ModuleNotFoundError: No module named 'app'
2020-07-21T17:13:51.844036+00:00 app[web.1]: [2020-07-21 17:13:51 +0000] [11] [INFO] Worker exiting (pid: 11)
2020-07-21T17:13:51.914199+00:00 app[web.1]: Traceback (most recent call last):
2020-07-21T17:13:51.914285+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 202, in run
2020-07-21T17:13:51.914955+00:00 app[web.1]: self.manage_workers()
2020-07-21T17:13:51.914991+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 545, in manage_workers
2020-07-21T17:13:51.915633+00:00 app[web.1]: self.spawn_workers()
2020-07-21T17:13:51.915666+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 617, in spawn_workers
2020-07-21T17:13:51.916296+00:00 app[web.1]: time.sleep(0.1 * random.random())
2020-07-21T17:13:51.916328+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 242, in handle_chld
2020-07-21T17:13:51.916828+00:00 app[web.1]: self.reap_workers()
2020-07-21T17:13:51.916859+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 525, in reap_workers
2020-07-21T17:13:51.917420+00:00 app[web.1]: raise HaltServer(reason, self.WORKER_BOOT_ERROR)
2020-07-21T17:13:51.917654+00:00 app[web.1]: gunicorn.errors.HaltServer: <HaltServer 'Worker failed to boot.' 3>
2020-07-21T17:13:51.917700+00:00 app[web.1]:
2020-07-21T17:13:51.917701+00:00 app[web.1]: During handling of the above exception, another exception occurred:
2020-07-21T17:13:51.917701+00:00 app[web.1]:
2020-07-21T17:13:51.917751+00:00 app[web.1]: Traceback (most recent call last):
2020-07-21T17:13:51.917782+00:00 app[web.1]: File "/app/.heroku/python/bin/gunicorn", line 8, in
2020-07-21T17:13:51.918130+00:00 app[web.1]: sys.exit(run())
2020-07-21T17:13:51.918164+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 58, in run
2020-07-21T17:13:51.918558+00:00 app[web.1]:
WSGIApplication("%(prog)s [OPTIONS] [APP_MODULE]").run()2020-07-21T17:13:51.918589+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/base.py", line 228, in run
2020-07-21T17:13:51.919067+00:00 app[web.1]: super().run()
2020-07-21T17:13:51.919097+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/base.py", line 72, in run
2020-07-21T17:13:51.919427+00:00 app[web.1]: Arbiter(self).run()
2020-07-21T17:13:51.919458+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 229, in run
2020-07-21T17:13:51.919876+00:00 app[web.1]:
self.halt(reason=inst.reason, exit_status=inst.exit_status)2020-07-21T17:13:51.919903+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 342, in halt
2020-07-21T17:13:51.920343+00:00 app[web.1]: self.stop()
2020-07-21T17:13:51.920344+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 393, in stop
2020-07-21T17:13:51.920754+00:00 app[web.1]: time.sleep(0.1)
2020-07-21T17:13:51.920755+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 242, in handle_chld
2020-07-21T17:13:51.920969+00:00 app[web.1]: self.reap_workers()
2020-07-21T17:13:51.921050+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 525, in reap_workers
2020-07-21T17:13:51.921391+00:00 app[web.1]: raise HaltServer(reason, self.WORKER_BOOT_ERROR)
2020-07-21T17:13:51.921445+00:00 app[web.1]: gunicorn.errors.HaltServer: <HaltServer 'Worker failed to boot.' 3>
2020-07-21T17:14:05.395374+00:00 heroku[web.1]: Starting process with command
gunicorn app:app
2020-07-21T17:14:07.954643+00:00 heroku[web.1]: Process exited with status 3
2020-07-21T17:14:08.017269+00:00 heroku[web.1]: State changed from starting to crashed
2020-07-21T17:14:07.713110+00:00 app[web.1]: [2020-07-21 17:14:07 +0000] [4] [INFO] Starting gunicorn 20.0.4
2020-07-21T17:14:07.713761+00:00 app[web.1]: [2020-07-21 17:14:07 +0000] [4] [INFO] Listening at: http://0.0.0.0:10104 (4)
2020-07-21T17:14:07.713883+00:00 app[web.1]: [2020-07-21 17:14:07 +0000] [4] [INFO] Using worker: sync
2020-07-21T17:14:07.718070+00:00 app[web.1]: [2020-07-21 17:14:07 +0000] [10] [INFO] Booting worker with pid: 10
2020-07-21T17:14:07.723100+00:00 app[web.1]: [2020-07-21 17:14:07 +0000] [10] [ERROR] Exception in worker process
2020-07-21T17:14:07.723101+00:00 app[web.1]: Traceback (most recent call last):
2020-07-21T17:14:07.723102+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
2020-07-21T17:14:07.723103+00:00 app[web.1]: worker.init_process()
2020-07-21T17:14:07.723103+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/workers/base.py", line 119, in init_process
2020-07-21T17:14:07.723103+00:00 app[web.1]: self.load_wsgi()
2020-07-21T17:14:07.723104+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
2020-07-21T17:14:07.723104+00:00 app[web.1]: self.wsgi = self.app.wsgi()
2020-07-21T17:14:07.723105+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/base.py", line 67, in wsgi
2020-07-21T17:14:07.723105+00:00 app[web.1]: self.callable = self.load()
2020-07-21T17:14:07.723106+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
2020-07-21T17:14:07.723106+00:00 app[web.1]: return self.load_wsgiapp()
2020-07-21T17:14:07.723106+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
2020-07-21T17:14:07.723107+00:00 app[web.1]: return util.import_app(self.app_uri)
2020-07-21T17:14:07.723107+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/util.py", line 358, in import_app
2020-07-21T17:14:07.723108+00:00 app[web.1]: mod = importlib.import_module(module)
2020-07-21T17:14:07.723108+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/importlib/init.py", line 127, in import_module
2020-07-21T17:14:07.723108+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
2020-07-21T17:14:07.723109+00:00 app[web.1]: File "", line 1006, in _gcd_import
2020-07-21T17:14:07.723109+00:00 app[web.1]: File "", line 983, in _find_and_load
2020-07-21T17:14:07.723110+00:00 app[web.1]: File "", line 965, in _find_and_load_unlocked
2020-07-21T17:14:07.723110+00:00 app[web.1]: ModuleNotFoundError: No module named 'app'
2020-07-21T17:14:07.723235+00:00 app[web.1]: [2020-07-21 17:14:07 +0000] [10] [INFO] Worker exiting (pid: 10)
2020-07-21T17:14:07.742951+00:00 app[web.1]: [2020-07-21 17:14:07 +0000] [11] [INFO] Booting worker with pid: 11
2020-07-21T17:14:07.750216+00:00 app[web.1]: [2020-07-21 17:14:07 +0000] [11] [ERROR] Exception in worker process
2020-07-21T17:14:07.750217+00:00 app[web.1]: Traceback (most recent call last):
2020-07-21T17:14:07.750218+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
2020-07-21T17:14:07.750219+00:00 app[web.1]: worker.init_process()
2020-07-21T17:14:07.750219+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/workers/base.py", line 119, in init_process
2020-07-21T17:14:07.750219+00:00 app[web.1]: self.load_wsgi()
2020-07-21T17:14:07.750220+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
2020-07-21T17:14:07.750220+00:00 app[web.1]: self.wsgi = self.app.wsgi()
2020-07-21T17:14:07.750221+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/base.py", line 67, in wsgi
2020-07-21T17:14:07.750221+00:00 app[web.1]: self.callable = self.load()
2020-07-21T17:14:07.750221+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
2020-07-21T17:14:07.750222+00:00 app[web.1]: return self.load_wsgiapp()
2020-07-21T17:14:07.750222+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
2020-07-21T17:14:07.750223+00:00 app[web.1]: return util.import_app(self.app_uri)
2020-07-21T17:14:07.750223+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/site-packages/gunicorn/util.py", line 358, in import_app
2020-07-21T17:14:07.750224+00:00 app[web.1]: mod = importlib.import_module(module)
2020-07-21T17:14:07.750224+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.7/importlib/init.py", line 127, in import_module
2020-07-21T17:14:07.750224+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
2020-07-21T17:14:07.750225+00:00 app[web.1]: File "", line 1006, in _gcd_import
2020-07-21T17:14:07.750225+00:00 app[web.1]: File "", line 983, in _find_and_load
2020-07-21T17:14:07.750226+00:00 app[web.1]: File "", line 965, in _find_and_load_unlocked
2020-07-21T17:14:07.750226+00:00 app[web.1]: ModuleNotFoundError: No module named 'app'
2020-07-21T17:14:07.750392+00:00 app[web.1]: [2020-07-21 17:14:07 +0000] [11] [INFO] Worker exiting (pid: 11)
2020-07-21T17:14:07.857960+00:00 app[web.1]: [2020-07-21 17:14:07 +0000] [4] [INFO] Shutting down: Master
2020-07-21T17:14:07.858054+00:00 app[web.1]: [2020-07-21 17:14:07 +0000] [4] [INFO] Reason: Worker failed to boot.
2020-07-21T17:14:10.000000+00:00 app[api]: Build succeeded