Blank screen by writing/sending ticket with rich text option active.

[macws]

Script URL:
Version of script: hesk3.2.5
Hosting company:
URL of phpinfo.php:
URL of session_test.php:
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Hello

I looked at forum if somebody had similar case but I didn't find.
We used so far hesk 3.1.1 without any issues.
We decided to upgrade to current version 3.2.5 because we wanted to use advantage of rich text option.
Update was done without problems.
After upgrade in settings rich text option was chosen.
Rich text field was visible and it was possible to paste pictures, format text etc.
Problem appeared when content of rich text field need to be saved for latere or just sent.
Then after button click appears blank screen and nothing happens.
Even with debug option switched nothing appear (no error code).
Addres bar show hesk/admin/admin_reply_ticket.php
After disabling rich text option in settings normal text field can be save or content can be sent without problem.

Permission of whole folder containing hesk are set to 777.
File admin_reply_ticket.php seem to not be damaged.

Mayby somebody have idea what can be reason of blank screen or in which log look for some hint ?

[Klemen]

Hard to give any help without knowing anything about your server. Could be a PHP version problem, could be missing functions, could be missing files...

Did you upload all the new files to the server? I would double-check that first, so that any of the required libraries/includes are not missing. Also make sure your PHP is 5.3+

You should have a PHP error log on your server somewhere, I'd look into that too.

[macws]

Thank You for suggestions

Below info about server.
Its virtual server running on Ubuntu 16.04.7 LTS.
PHP version 7.0.33-0ubuntu0.16.04.16(MySQLi)

Seem that installation is complete. To be sure Hesk version 3.2.4 was installed as well to check behavior rich text option.
But situation was exactly the same - empty screen.

I installed the same files on my laptop using lamp stack and hesk 3.2.5 works without problem with rich text writing/saving ( here was 5.6.30 PHP version )

Seams problem is related with server software.
Should be probably updated to newer version?

[Klemen]

Hard to say what is wrong, maybe a PHP configuration issue causing this. It should work on PHP 5.3+ so the version is not the issue.

Try searching the server for file "error_log" and see if you find any info inside.

If you can give me FTP access to your help desk (in private) I can have a look and try to see what is causing this, but probably not before Monday.