Apostrophe causing attachment error

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Hi, I'm not sure if this is an already reported bug and I did a search beforehand to no results.

Each time I try to attach a file to a ticket that has an apostrophe in the file name (whether from customer side or admin side), I get a 500 Internal Server Error. Is there any fix to this that I'm simply unaware of or is it truly a bug?

Thanks for your help!

[Klemen]

A 500 error is returned by the server, not by HESK. Also, HESK removes any unsafe chars from file names before using them.

This is most likely caused by security software on your server, probably a mod_security rule being triggered. Ask your hosting company to verify mod security log.