So the good thing is I see no error in scanner and tvdb logs, but the sytem bundle log does shows some errors:
2019-08-02 18:09:01,385 (80ae47a00) : DEBUG (networking:166) - Requesting 'https://thetvdb.com/banners/episodes/76107/183234.jpg'
2019-08-02 18:09:16,965 (80ae47a00) : ERROR (networking:219) - Error opening URL 'https://thetvdb.com/banners/episodes/76107/183234.jpg'
2019-08-02 18:09:16,966 (80ae47a00) : CRITICAL (runtime:889) - Exception (most recent call last):
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Versions/2/Python/Framework/components/runtime.py", line 843, in handle_request
result = f(**d)
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/System.bundle/Contents/Code/agentservice.py", line 1044, in media_get
data = HTTP.Request(media_url, cacheTime=0).content
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Versions/2/Python/Framework/components/networking.py", line 265, in content
return self.__str__()
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Versions/2/Python/Framework/components/networking.py", line 243, in __str__
self.load()
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Versions/2/Python/Framework/components/networking.py", line 181, in load
f = self._opener.open(req, timeout=self._timeout)
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Platforms/Shared/Libraries/urllib2_new.py", line 444, in open
response = meth(req, response)
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Platforms/Shared/Libraries/urllib2_new.py", line 557, in http_response
'http', request, response, code, msg, hdrs)
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Platforms/Shared/Libraries/urllib2_new.py", line 476, in error
result = self._call_chain(*args)
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Platforms/Shared/Libraries/urllib2_new.py", line 416, in _call_chain
result = func(*args)
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Versions/2/Python/Framework/components/networking.py", line 96, in http_error_301
result = urllib2.HTTPRedirectHandler.http_error_301(self, req, fp, code, msg, headers)
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Platforms/Shared/Libraries/urllib2_new.py", line 652, in http_error_302
return self.parent.open(new, timeout=req.timeout)
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Platforms/Shared/Libraries/urllib2_new.py", line 444, in open
response = meth(req, response)
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Platforms/Shared/Libraries/urllib2_new.py", line 557, in http_response
'http', request, response, code, msg, hdrs)
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Platforms/Shared/Libraries/urllib2_new.py", line 482, in error
return self._call_chain(*args)
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Platforms/Shared/Libraries/urllib2_new.py", line 416, in _call_chain
result = func(*args)
File "/usr/local/share/plexmediaserver/Resources/Plug-ins-22929c8a2/Framework.bundle/Contents/Resources/Platforms/Shared/Libraries/urllib2_new.py", line 565, in http_error_default
raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
HTTPError: HTTP Error 522: Origin Connection Time-out
However this is just for some requests, and most part actually return 200 Ok, which means it might simply be to much load on tvdb at that time.
Also at least on the last log those are all from the same show.
Could you please try and got to Settings -> Troubleshooting -> Clean bundle? See if that helps?
I’ll keep digging into the logs see If I spot anything else in the mean time.

