You're calling elementExists() but not as a method of the class.
You're calling elementExists(), but not as a method of the class. Try: $this->elementExists(); Or from LXAccAdminModel: parent::elementExists(); $this->elementExists() should suffice in both cases, $this referring to the current class.
I didn't know I should do that! That fixed my problem, thank you! – Loupax Jul 7 at 17:08.
If I am not wrong then the error is in your derived class you have forgot to put $this while calling the elementExists() function that should be $this->elementExists().
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