trying to upgrade a plugin on confluence pre live env but getting this error
An unexpected error occurred. Refer to the logs for more information.
this error in the logs
2017-09-14 17:45:05,701 INFO [UpmAsynchronousTaskManager:thread-2] [atlassian.plugin.manager.DefaultPluginManager] updatePlugin Updating plugin 'com.atlassian.confluence.extra.team-calendars' from version '5.3.16' to version '5.3.19'
2017-09-14 17:45:05,702 INFO [UpmAsynchronousTaskManager:thread-2] [atlassian.plugin.manager.DefaultPluginManager] broadcastPluginDisabling Disabling com.atlassian.confluence.extra.team-calendars
2017-09-14 17:45:28,111 WARN [http-nio-8090-exec-4] [atlassian.applinks.core.DefaultApplicationLinkService] retrieveApplicationLink Couldn't find type id for application link with id 5c89fdb3-5d8f-3ea6-b6ee-e074df18dfc4. Link is corrupted
-- traceId: fed54f4465ed2b6b
2017-09-14 17:45:28,118 WARN [http-nio-8090-exec-4] [atlassian.applinks.core.DefaultApplicationLinkService] retrieveApplicationLink Couldn't find type id for application link with id 363053b8-0756-396e-a199-3db3272806b9. Link is corrupted
-- traceId: fed54f4465ed2b6b
2017-09-14 17:45:29,471 WARN [UpmScheduler:thread-4] [atlassian.upm.pac.PacClientImpl] getUpdates Update check request may take longer because of the number of add-ons
-- url: /rest/plugins/1.0/ | referer: http://confluence-prelive-build.dave.net-a-porter.com/plugins/servlet/upm | traceId: 5b7e924c40b1d774 | userName: k.patel