[SOLVED] error shown when users login

JEM 2.2.3 on Joomla 3.9.3; PHP 7.2.
url: removed

When not logged in, there is no error message.
As soon as a normal user (no admin rights) loggs in the following error apears:

Deprecated: Function create_function() is deprecated in ../components/com_jem/classes/user.class.php on line 229

What have i done wrong?
What do i have to do to make the error message disapear (besides logg-off )

to show what i mean:

see this file:


Error only shown when people are signed in and have no administrator rights….

When simpellist not is activated the message appear above Calendar module:

Yes, thank you for the hint.
We know about this problem and I integrated a fix fo that. ( github.com/Egnarts94/JEM-Project/commit/b728d64e2546f819afb51e841475059ac0fdd5ad )
Change both files yourself and we will fix that in the next version.

YES!

Thank you!

This worked fine!

Problem solved!