[00:00:57] [Thread-23/ERROR]: [PlugMan] The updater could not contact dev.bukkit.org for updating.
[00:00:57] [Thread-23/ERROR]: [PlugMan] If you have not recently modified your configuration and this is the first time you are seeing this message, the site may be experiencing temporary downtime.
[00:00:57] [Thread-23/ERROR]: [PlugMan] null
java.io.IOException: Server returned HTTP response code: 521 for URL: https://api.curseforge.com/servermods/files?projectIds=36006
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source) ~[?:1.8.0_121]
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.8.0_121]
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.8.0_121]
	at net.gravitydevelopment.updater.Updater.read(Updater.java:642) [PlugMan.jar:?]
	at net.gravitydevelopment.updater.Updater.runUpdater(Updater.java:717) [PlugMan.jar:?]
	at net.gravitydevelopment.updater.Updater.access$100(Updater.java:35) [PlugMan.jar:?]
	at net.gravitydevelopment.updater.Updater$UpdateRunnable.run(Updater.java:712) [PlugMan.jar:?]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_121]
[00:00:57] [Craft Scheduler Thread - 15/WARN]: [PlugMan] Updater was unable to connect with dev.bukkit.org to look for updates.