Synology - DS1618+ Update to 1.18.0.1846 from 1.17.0.1709 Fail to Find Server

All,
Currently running 1.17.0.1709 and updating to the new 1.18 on the above. However finding via the dashboard after this that it is unable to find the server on the network. I have removed and gone back to the old version no problem at all.

Here is a sample of the logs

Oct 05, 2019 17:57:26.610 [0x7faa6de42700] ERROR - Error issuing curl_easy_perform(handle): 6
Oct 05, 2019 17:57:26.611 [0x7faa6de42700] WARN - HTTP error requesting GET https://plex.tv/api/v2/server/access_tokens?auth_token=xxxxxxxxxxxxxxxxxxxx&includeProfiles=1&includeProviders=1 (0, No error) (Could not resolve host: plex.tv)
Oct 05, 2019 17:57:26.611 [0x7faa6de42700] DEBUG - MyPlex: no cached data to load for request for https://plex.tv/api/v2/server/access_tokens?auth_token=xxxxxxxxxxxxxxxxxxxx&includeProfiles=1&includeProviders=1
Oct 05, 2019 17:57:26.611 [0x7faa6de42700] ERROR - MyPlex: Error -6 requesting XML from: https://plex.tv/api/v2/server/access_tokens?auth_token=xxxxxxxxxxxxxxxxxxxx&includeProfiles=1&includeProviders=1
Oct 05, 2019 17:57:26.611 [0x7faa6de42700] ERROR - MyPlex: Couldn’t get list of access tokens from myPlex.
Oct 05, 2019 17:57:26.611 [0x7faa6e41e700] DEBUG - Auth: Refreshing tokens inside the token-based authentication filter.
Oct 05, 2019 17:57:26.611 [0x7faa6e41e700] DEBUG - HTTP requesting GET https://plex.tv/api/v2/server/access_tokens?auth_token=xxxxxxxxxxxxxxxxxxxx&includeProfiles=1&includeProviders=1
Oct 05, 2019 17:57:30.128 [0x7faa6ed69700] DEBUG - HTTP 504 response from GET http://127.0.0.1:35169/system/notify/serverUpdated?host=169.254.212.200
Oct 05, 2019 17:57:30.129 [0x7faa6ed69700] DEBUG - [com.plexapp.system] HTTP reply status 504, with 0 bytes of content.
Oct 05, 2019 17:57:30.129 [0x7faa6ed69700] DEBUG - NetworkServiceBrowser: Parsing SSDP schema for http://192.168.1.19:60606/A813741E5188/Server0/ddd
Oct 05, 2019 17:57:30.130 [0x7faa6ed69700] DEBUG - HTTP requesting GET http://192.168.1.19:60606/A813741E5188/Server0/ddd
Oct 05, 2019 17:57:30.136 [0x7faa6ed69700] DEBUG - HTTP 200 response from GET http://192.168.1.19:60606/A813741E5188/Server0/ddd
Oct 05, 2019 17:57:30.136 [0x7faa6ed69700] DEBUG - NetworkServiceBrowser: found 1 SSDP devices via http://192.168.1.19:60606/A813741E5188/Server0/ddd
Oct 05, 2019 17:57:30.136 [0x7faa6ed69700] DEBUG - NetworkServiceBrowser: SSDP arrived: 192.168.1.19 (DMR-BWT955)
Oct 05, 2019 17:57:30.137 [0x7faa6ed69700] DEBUG - NetworkServiceBrowser: Parsing SSDP schema for http://192.168.1.34:80/dms/device.xml
Oct 05, 2019 17:57:30.137 [0x7faa6ed69700] DEBUG - HTTP requesting GET http://192.168.1.34:80/dms/device.xml
Oct 05, 2019 17:57:30.149 [0x7faa6ed69700] DEBUG - HTTP 200 response from GET http://192.168.1.34:80/dms/device.xml
Oct 05, 2019 17:57:30.150 [0x7faa6ed69700] DEBUG - NetworkServiceBrowser: found 1 SSDP devices via http://192.168.1.34:80/dms/device.xml
Oct 05, 2019 17:57:30.150 [0x7faa6ed69700] DEBUG - NetworkServiceBrowser: SSDP arrived: 192.168.1.34 (HDHomeRun DMS 1251C85A)
Oct 05, 2019 17:57:30.150 [0x7faa27735700] DEBUG - DVR:Device: Discovering and refreshing devices with identifier tv.plex.grabbers.hdhomerun
Oct 05, 2019 17:57:30.150 [0x7faa6ed69700] DEBUG - NetworkServiceBrowser: Parsing SSDP schema for http://192.168.1.11:8080/upnpd/74cf80fbca.xml
Oct 05, 2019 17:57:30.150 [0x7faa6ed69700] DEBUG - HTTP requesting GET http://192.168.1.11:8080/upnpd/74cf80fbca.xml
Oct 05, 2019 17:57:30.153 [0x7faa6ed69700] DEBUG - HTTP 200 response from GET http://192.168.1.11:8080/upnpd/74cf80fbca.xml
Oct 05, 2019 17:57:30.153 [0x7faa6ed69700] DEBUG - NetworkServiceBrowser: found 1 SSDP devices via http://192.168.1.11:8080/upnpd/74cf80fbca.xml
Oct 05, 2019 17:57:30.153 [0x7faa6ed69700] DEBUG - NetworkServiceBrowser: SSDP arrived: 192.168.1.11 (NAS4)
Oct 05, 2019 17:57:30.153 [0x7faa27735700] DEBUG - DVR:Grabber: HDHomerun discovered a model HDHR4-2DT.
Oct 05, 2019 17:57:30.153 [0x7faa6ed69700] DEBUG - NetworkService: Replacing an old server at index 4 and address 169.254.212.200 (we just got packet from 169.254.133.72, index 2)
Oct 05, 2019 17:57:30.153 [0x7faa6ed69700] DEBUG - NetworkServiceBrowser: SERVER updated: 169.254.133.72 (NAS5)
Oct 05, 2019 17:57:30.153 [0x7faa6ed69700] DEBUG - Notifying the system bundle an update to server /system/notify/serverUpdated?host=169.254.133.72
Oct 05, 2019 17:57:30.153 [0x7faa27735700] DEBUG - HTTP requesting GET http://192.168.1.30:80/discover.json
Oct 05, 2019 17:57:30.153 [0x7faa6ed69700] DEBUG - [com.plexapp.system] Sending command over HTTP (GET): /system/notify/serverUpdated?host=169.254.133.72
Oct 05, 2019 17:57:30.154 [0x7faa6ed69700] DEBUG - HTTP requesting GET http://127.0.0.1:35169/system/notify/serverUpdated?host=169.254.133.72
Oct 05, 2019 17:57:30.208 [0x7faa27735700] DEBUG - HTTP 404 response from GET http://192.168.1.30:80/discover.json
Oct 05, 2019 17:57:30.208 [0x7faa27735700] DEBUG - JSON parse error: Invalid value. (0)
Oct 05, 2019 17:57:30.208 [0x7faa27735700] DEBUG - DVR:Grabber: HDHomerun discovered a model HDHR5-4DT.
Oct 05, 2019 17:57:30.209 [0x7faa27735700] DEBUG - HTTP requesting GET http://192.168.1.34:80/discover.json
Oct 05, 2019 17:57:30.210 [0x7faa27735700] DEBUG - HTTP 200 response from GET http://192.168.1.34:80/discover.json
Oct 05, 2019 17:57:30.211 [0x7faa27735700] DEBUG - HTTP requesting GET http://192.168.1.34:80/lineup_status.json
Oct 05, 2019 17:57:30.222 [0x7faa27735700] DEBUG - HTTP 200 response from GET http://192.168.1.34:80/lineup_status.json
Oct 05, 2019 17:57:30.235 [0x7faa27735700] DEBUG - DVR:Grabber: HDHomerun discovered 1 compatible devices.
Oct 05, 2019 17:57:30.235 [0x7faa27735700] DEBUG - DVR:Device: Testing grabber HDHomerun device device://tv.plex.grabbers.hdhomerun/1251C85A at http://192.168.1.34:80
Oct 05, 2019 17:57:30.235 [0x7faa27735700] DEBUG - DVR:Device: Device device://tv.plex.grabbers.hdhomerun/1251C85A was already known, refreshing database info
Oct 05, 2019 17:57:30.236 [0x7faa27735700] DEBUG - HTTP requesting GET http://192.168.1.34:80/discover.json
Oct 05, 2019 17:57:30.237 [0x7faa27735700] DEBUG - HTTP 200 response from GET http://192.168.1.34:80/discover.json
Oct 05, 2019 17:57:30.237 [0x7faa27735700] DEBUG - HTTP requesting GET http://192.168.1.34:80/lineup_status.json
Oct 05, 2019 17:57:30.249 [0x7faa27735700] DEBUG - HTTP 200 response from GET http://192.168.1.34:80/lineup_status.json
Oct 05, 2019 17:57:30.263 [0x7faa27735700] DEBUG - DVR:Device: Device was alive, refreshed device://tv.plex.grabbers.hdhomerun/1251C85A.
Oct 05, 2019 17:57:30.263 [0x7faa27735700] DEBUG - DVR:Device: Testing grabber HDHomerun device device://tv.plex.grabbers.hdhomerun/12320F94 at http://192.168.1.30:80
Oct 05, 2019 17:57:30.263 [0x7faa27735700] DEBUG - DVR:Device: Device device://tv.plex.grabbers.hdhomerun/12320F94 was already known, refreshing database info
Oct 05, 2019 17:57:30.264 [0x7faa27735700] DEBUG - HTTP requesting GET http://192.168.1.30:80/discover.json
Oct 05, 2019 17:57:30.316 [0x7faa27735700] DEBUG - HTTP 404 response from GET http://192.168.1.30:80/discover.json
Oct 05, 2019 17:57:30.317 [0x7faa27735700] DEBUG - JSON parse error: Invalid value. (0)
Oct 05, 2019 17:57:30.317 [0x7faa27735700] ERROR - DVR:Device: Error refreshing existing device device://tv.plex.grabbers.hdhomerun/12320F94, marking as dead.
Oct 05, 2019 17:57:30.317 [0x7faa27735700] DEBUG - DVR:Device: Testing grabber HDHomerun device device://tv.plex.grabbers.hdhomerun/12338C40 at http://192.168.1.31:80
Oct 05, 2019 17:57:30.317 [0x7faa27735700] DEBUG - DVR:Device: Device device://tv.plex.grabbers.hdhomerun/12338C40 was already known, refreshing database info
Oct 05, 2019 17:57:30.318 [0x7faa27735700] DEBUG - HTTP requesting GET http://192.168.1.31:80/discover.json
Oct 05, 2019 17:57:30.320 [0x7faa27735700] DEBUG - HTTP 200 response from GET http://192.168.1.31:80/discover.json
Oct 05, 2019 17:57:30.321 [0x7faa27735700] DEBUG - HTTP requesting GET http://192.168.1.31:80/lineup_status.json
Oct 05, 2019 17:57:30.333 [0x7faa27735700] DEBUG - HTTP 200 response from GET http://192.168.1.31:80/lineup_status.json
Oct 05, 2019 17:57:30.347 [0x7faa27735700] DEBUG - DVR:Device: Device was alive, refreshed device://tv.plex.grabbers.hdhomerun/12338C40.
Oct 05, 2019 17:57:35.128 [0x7faa6e41e700] ERROR - Error issuing curl_easy_perform(handle): 6
Oct 05, 2019 17:57:35.129 [0x7faa6e41e700] WARN - HTTP error requesting GET https://plex.tv/api/v2/server/access_tokens?auth_token=xxxxxxxxxxxxxxxxxxxx&includeProfiles=1&includeProviders=1 (0, No error) (Could not resolve host: plex.tv)

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