I can not clone event

I have installed version 2.x. I have a question.
I can not clone an event (Clone Event). Almost at the end of the process (3. Category), it gives me the following message: “internal server error (500)”.
Where can the error be? Has this happened to you?

It seems that you can not clone an event that is the product of a cloning. If you continue cloning the
original it seems that if you can and in the end I did it like that.

All good,
Thank you

No, you should be able to clone any event, regardless of whether it’s a clone or not. If that doesn’t work, something is wrong.

Please check your indico.log file (in /opt/indico/log) for the exception and full traceback of the error.