What version did you upgrade from? Additionally, can you check the server error log and see if there are any recent messages pertaining to this? But first give the Recovery Mode in the below guide a try and see if it would help:

I upgraded from Beta 13

 

I upgraded from Beta 13

Did you try the Recovery Mode?

Edited January 30Jan 30 by Miss_B

Didn't know there was one on this version.

Okay I did that it's still there.

What's in your system log? Any error like that would log an exception.

TypeError: IPS\Patterns\ActiveRecord::constructFromData(): Argument #1 ($data) must be of type array, int given, called in /var/www/vhosts/awsefed.com/httpdocs/applications/forums/sources/Forum/Forum.php on line 906 and defined in /var/www/vhosts/awsefed.com/httpdocs/system/Patterns/ActiveRecord.php:242

Stack trace:

#0 /var/www/vhosts/awsefed.com/httpdocs/applications/forums/sources/Forum/Forum.php(906): IPS\Patterns\ActiveRecord::constructFromData()

#1 /var/www/vhosts/awsefed.com/httpdocs/static/templates/forums_front_index.php(838): IPS\forums\Forum->lastPost()

#2 /var/www/vhosts/awsefed.com/httpdocs/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_forums_front_index->forumRow()

#3 /var/www/vhosts/awsefed.com/httpdocs/static/templates/forums_front_index.php(2767): IPS\Theme\SandboxedTemplate->__call()

#4 /var/www/vhosts/awsefed.com/httpdocs/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_forums_front_index->index()

#5 /var/www/vhosts/awsefed.com/httpdocs/applications/forums/modules/front/forums/index.php(252): IPS\Theme\SandboxedTemplate->__call()

#6 /var/www/vhosts/awsefed.com/httpdocs/system/Dispatcher/Controller.php(139): IPS\forums\modules\front\forums\index->manage()

#7 /var/www/vhosts/awsefed.com/httpdocs/applications/forums/modules/front/forums/index.php(76): IPS\Dispatcher\Controller->execute()

#8 /var/www/vhosts/awsefed.com/httpdocs/system/Dispatcher/Dispatcher.php(169): IPS\forums\modules\front\forums\index->execute()

#9 /var/www/vhosts/awsefed.com/httpdocs/index.php(16): IPS\Dispatcher->run()

#10 {main}

Changed Status to Fixed

I'll do a patch today for this.