XF 1.5 Server log spam

[MirandaSings]

I've been getting spammed with 339 pages or so with the same error, how do I fix it?
Screen:

 

[Jeremy]

Those logs aren't being spammed, it logs every occurrence of an issue.

Have you recently installed any add-ons recently?

 

[MirandaSings]

Yes, this is a list of my addons:
About Us 1.1
Ad Manager 1.0
Alter Ego Detector 1.4.11
Ban Thread 1.1
Change Author 1.9
Change Date 1.4
Contact Us Thread 1.0.1
Country Flags 1.3.2
Custom User Field Search 2.0.1
Delete Posts 1.5
Delete Profile Posts 1.0
Donations 1.2
FAQ Manager by Iversia 3.2.0
Find Unanswered Threads 1.0.5
Flag Thread 1.3
Force Ignore by Waindigo 1.0.1
Image Resizer 1.7
Inactive Members 3.2
Moderators 1.7
New Posts 2.0
New Thread Button Text Beta 3
Nodes As Tabs 1.2.2
Post As User by Waindigo 1.0.7a
Search Log 2.2
Show Deleted 2.1
Similar Threads 4.1
SoundCloud 1.0
Special Avatar for Banned Members 1.3.6
Tab Alerts 1.4
Thread Navigation by Waindigo 1.0.2a
Thread Rating 1.2.1.7
Threadmarks 1.1.5
Today's Birthdays 1.4
Top Threads 1.2
Unread Post Count 1.2.0
User Agent 1.8
Warn Thread 1.3
Who Voted

 

[Martok]

Click on the error to show more details, hopefully the full error will indicate what is causing the problem (probably an add-on).

 

[MirandaSings]

Click on the error to show more details, hopefully the full error will indicate what is causing the problem (probably an add-on).

One of them says:

XenForo_Exception: The requested forum could not be found. - library/XenForo/DataWriter.php:1345
Generated By: Unknown Account, Today at 6:51 AM

Stack Trace

#0 /customers/e/b/d/dreamaion-forum.com/httpd.www/library/XenForo/DataWriter.php(1387): XenForo_DataWriter->_haveErrorsPreventSave()
#1 /customers/e/b/d/dreamaion-forum.com/httpd.www/library/XenForo/DataWriter/Discussion.php(556): XenForo_DataWriter->save()
#2 /customers/e/b/d/dreamaion-forum.com/httpd.www/library/XenForo/DataWriter/Discussion.php(440): XenForo_DataWriter_Discussion->_updateContainerPostSave()
#3 /customers/e/b/d/dreamaion-forum.com/httpd.www/library/XenForo/DataWriter.php(1409): XenForo_DataWriter_Discussion->_postSave()
#4 /customers/e/b/d/dreamaion-forum.com/httpd.www/library/Andy/WarnThread/CronEntry/WarnThread.php(246): XenForo_DataWriter->save()
#5 [internal function]: Andy_WarnThread_CronEntry_WarnThread::runWarnThread(Array)
#6 /customers/e/b/d/dreamaion-forum.com/httpd.www/library/XenForo/Model/Cron.php(357): call_user_func(Array, Array)
#7 /customers/e/b/d/dreamaion-forum.com/httpd.www/library/XenForo/Deferred/Cron.php(24): XenForo_Model_Cron->runEntry(Array)
#8 /customers/e/b/d/dreamaion-forum.com/httpd.www/library/XenForo/Model/Deferred.php(294): XenForo_Deferred_Cron->execute(Array, Array, 7.9999980926514, '')
#9 /customers/e/b/d/dreamaion-forum.com/httpd.www/library/XenForo/Model/Deferred.php(428): XenForo_Model_Deferred->runDeferred(Array, 7.9999980926514, '', false)
#10 /customers/e/b/d/dreamaion-forum.com/httpd.www/library/XenForo/Model/Deferred.php(373): XenForo_Model_Deferred->_runInternal(Array, NULL, '', false)
#11 /customers/e/b/d/dreamaion-forum.com/httpd.www/deferred.php(23): XenForo_Model_Deferred->run(false)
#12 {main}

 

[Martok]

I see reference to the Warn Thread add-on in that error. If disabling it stops the errors then that's the issue. You'll needs to seek support from the author in the discussion thread for that add-on.