Actually you were having network issues round that time
Internet outage / DNS outage during most of this period
Apr 12, 2018 21:53:31.705 [0x7f8ce3bfe700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:31.706 [0x7f8ce3bfe700] WARN - HTTP error requesting GET https://plex.tv/servers/201d6d938eb240acb4c83f6c6099580e12f5afcc/access_tokens.xml?auth_token=xxxxxxxxxxxxxxxxxxxx&includeProfiles=1&includeProviders=1 (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.393 [0x7f8ce3bfe700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.393 [0x7f8ce3bfe700] WARN - HTTP error requesting GET http://plex.tv/pms/:/ip (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.395 [0x7f8ce53fd700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.395 [0x7f8ce53fd700] WARN - HTTP error requesting PUT https://plex.tv/devices/201d6d938eb240acb4c83f6c6099580e12f5afcc?httpsEnabled=1&httpsRequired=0&X-Plex-Token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.396 [0x7f8ce3bfe700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.396 [0x7f8ce3bfe700] WARN - HTTP error requesting PUT https://plex.tv/devices/201d6d938eb240acb4c83f6c6099580e12f5afcc?httpsEnabled=1&httpsRequired=0&X-Plex-Token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.426 [0x7f8ce01ea700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.426 [0x7f8ce01ea700] WARN - HTTP error requesting GET https://plex.tv/users/account.xml?auth_token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.434 [0x7f8ce43ff700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.434 [0x7f8ce43ff700] WARN - HTTP error requesting GET https://plex.tv/api/v2/server/webhooks?X-Plex-Token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.440 [0x7f8ce01ea700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.440 [0x7f8ce01ea700] WARN - HTTP error requesting GET https://plex.tv/servers/201d6d938eb240acb4c83f6c6099580e12f5afcc/sync_lists?auth_token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.443 [0x7f8ce01ea700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.443 [0x7f8ce01ea700] WARN - HTTP error requesting GET https://plex.tv/api/v2/release_channels?X-Plex-Token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.444 [0x7f8ce01ea700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.444 [0x7f8ce01ea700] WARN - HTTP error requesting GET https://plex.tv/api/v2/user/privacy?X-Plex-Token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.447 [0x7f8ce01ea700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.447 [0x7f8ce01ea700] WARN - HTTP error requesting PUT https://plex.tv/devices/201d6d938eb240acb4c83f6c6099580e12f5afcc?httpsEnabled=1&httpsRequired=0&X-Plex-Token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.465 [0x7f8cddbfd700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.465 [0x7f8cddbfd700] WARN - HTTP error requesting POST https://plex.tv/servers.xml?auth_token=xxxxxxxxxxxxxxxxxxxx&async=1&asyncIdentifier=2644b22f-f397-40c2-aef3-6dd862fbbd0a (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.502 [0x7f8ce63ff700] DEBUG - EventSource: Resolved 45.33.73.209 to 45.33.73.209
Apr 12, 2018 21:53:33.505 [0x7f8ce3bfe700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.505 [0x7f8ce3bfe700] WARN - HTTP error requesting GET http://plex.tv/pms/:/ip (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.506 [0x7f8ce73ff700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.506 [0x7f8ce73ff700] WARN - HTTP error requesting PUT https://plex.tv/devices/201d6d938eb240acb4c83f6c6099580e12f5afcc?httpsEnabled=1&httpsRequired=0&X-Plex-Token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.506 [0x7f8ce3bfe700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.506 [0x7f8ce3bfe700] WARN - HTTP error requesting PUT https://plex.tv/devices/201d6d938eb240acb4c83f6c6099580e12f5afcc?httpsEnabled=1&httpsRequired=0&X-Plex-Token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.512 [0x7f8ce01ea700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.512 [0x7f8ce01ea700] WARN - HTTP error requesting GET https://plex.tv/api/v2/release_channels?X-Plex-Token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:33.567 [0x7f8ce01ea700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:33.567 [0x7f8ce01ea700] WARN - HTTP error requesting GET https://plex.tv/api/v2/user/privacy?X-Plex-Token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:34.169 [0x7f8ce73ff700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:34.169 [0x7f8ce73ff700] WARN - HTTP error requesting GET http://plex.tv/pms/:/ip (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:34.171 [0x7f8ce73ff700] ERROR - Error issuing curl_easy_perform(handle): 6
Apr 12, 2018 21:53:34.171 [0x7f8ce73ff700] WARN - HTTP error requesting PUT https://plex.tv/devices/201d6d938eb240acb4c83f6c6099580e12f5afcc?Connection[][uri]=http://10.0.0.50:32400&httpsEnabled=1&httpsRequired=0&X-Plex-Token=xxxxxxxxxxxxxxxxxxxx (0, No error) (Couldn't resolve host 'plex.tv')
Apr 12, 2018 21:53:48.502 [0x7f8ce5bfe700] DEBUG - EventSource: Resolved 45.33.73.209 to 45.33.73.209
and network card going off / on
Apr 12, 2018 21:53:33.394 [0x7f8cf52e2840] DEBUG - Network change.
Apr 12, 2018 21:53:33.394 [0x7f8cf52e2840] DEBUG - NetworkInterface: Notified of network changed (force=0)
Apr 12, 2018 21:53:33.397 [0x7f8cf52e2840] DEBUG - * 1 lo (127.0.0.1) (loopback: 1)
Apr 12, 2018 21:53:33.397 [0x7f8cf52e2840] DEBUG - NetworkService: Quick dispatch of network change.
Apr 12, 2018 21:53:33.415 [0x7f8cdebff700] DEBUG - NetworkService: Network change for browser (polled=0), closing 0 browse sockets.
Apr 12, 2018 21:53:34.154 [0x7f8cdf9e9700] DEBUG - Network change.
Apr 12, 2018 21:53:34.154 [0x7f8cdf9e9700] DEBUG - NetworkInterface: Notified of network changed (force=0)
Apr 12, 2018 21:53:34.154 [0x7f8cdf9e9700] DEBUG - Network change notification but nothing changed.
Apr 12, 2018 21:53:34.168 [0x7f8cdf9e9700] DEBUG - Network change.
Apr 12, 2018 21:53:34.168 [0x7f8cdf9e9700] DEBUG - NetworkInterface: Notified of network changed (force=0)
Apr 12, 2018 21:53:34.168 [0x7f8cdf9e9700] DEBUG - * 1 lo (127.0.0.1) (loopback: 1)
Apr 12, 2018 21:53:34.168 [0x7f8cdf9e9700] DEBUG - * 2 enp3s0 (10.0.0.50) (loopback: 0)
Apr 12, 2018 21:53:34.168 [0x7f8cdf9e9700] DEBUG - NetworkService: Dispatch network change after two second delay.
Apr 12, 2018 21:53:34.205 [0x7f8cdf9e9700] DEBUG - Network change.
Apr 12, 2018 21:53:34.205 [0x7f8cdf9e9700] DEBUG - NetworkInterface: Notified of network changed (force=0)
Apr 12, 2018 21:53:34.205 [0x7f8cdf9e9700] DEBUG - Network change notification but nothing changed.
Apr 12, 2018 21:53:36.168 [0x7f8cdebff700] DEBUG - NetworkService: Network change for browser (polled=0), closing 0 browse sockets.