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Haystack error when opening tickets (occassionally)

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Hey all!

We recently upgraded to WHMCS 8.6, and all is well except for a few issues.

Occasionally a ticket will throw an error when opening it, this ticket could be brand-new or days old with many replies in it:

TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in /var/www/html/ponyboy/supporttickets.php:0
Stack trace:
#0 /var/www/html/ponyboy/supporttickets.php(0): in_array()
#1 {main}\]

I can still access the ticket via the WHMCS mobile app, it's just the browser that complains.

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1 minute ago, DennisHermannsen said:

Are you able to reproduce the error by doing specific steps? Giving all information possible will most likely result in a quick fix from WHMCS.


Sadly no, it is an issue that may happen once in a blue moon - we could have a ticket open with a customer and be communicating back and forth on it for days when all of the sudden this pops up.

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That specific error just seem like it would happen in a very specific case.
Does the client attach anything? Are they trying to add a CC?

Also, does it happen on 8.6.1 as well?

Edited by DennisHermannsen

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