Clearly log failed update if remote version can't be fetched

root/etc/s6-overlay/s6-rc.d/init-plex-update/run

@@ -100,7 +100,7 @@ if [[ "${VERSION,,}" = latest ]] || [[ "${VERSION,,}" = plexpass ]] || [[ "$PLEX
     fi
     REMOTE_VERSION=$(curl -s "https://plex.tv/downloads/details/5?distro=debian&build=linux-${PLEX_URL_ARCH}&channel=8&X-Plex-Token=$PLEX_TOKEN"| grep -oP 'version="\K[^"]+' | tail -n 1 )
 elif [[ "${VERSION,,}" = public ]]; then
-    REMOTE_VERSION=$(curl -sX GET 'https://plex.tv/api/downloads/5.json' | jq -r '.computer.Linux.version')
+    REMOTE_VERSION=$(curl -s 'https://plex.tv/api/downloads/5.json' | jq -r '.computer.Linux.version')
 else
     REMOTE_VERSION="${VERSION}"
 fi
@@ -110,6 +110,11 @@ if [[ "$REMOTE_VERSION" == "$INSTALLED_VERSION" ]]; then
     exit 0
 fi
 
+if [[ -z "${REMOTE_VERSION}" ]]; then
+    echo "*** Unable to fetch version from Plex remote endpoint, please check your network configuration ***"
+    exit 0
+fi
+
 echo "Atempting to upgrade to: $REMOTE_VERSION"
 rm -f /tmp/plexmediaserver_*.deb
 wget -nv -P /tmp \