Not open Quelea

Hello to the entire community, my situation is the following:

I have an iMac with OS High Sierra version 10.13.6 and I managed to open the application, now after connecting a keyboard, I had several problems when using it and Quelea constantly closed. After disconnecting the keyboard that was causing problems, I tried to run Quelea again and it no longer made the program work.
I have tried restarting the iMac and nothing works.
Any ideas what I could do?
Thanks in advance.