Getting a critical error message when editing loop template

I am using Ele Custom Skin with Elementor + Elementor Pro. Today, I tried to load my homepage and got a message that my website had a critical error. I have traced the error to a loop template which I used on the homepage and other pages. All the other pages where the template is included also show the critical error message.

I can’t edit these pages directly or via elementor. I also can’t edit the loop template that is causing the problem. I have tried deleting the loop template, but that didn’t help.

It seems the only way to stop it is to deselect the custom template in the posts widget inside the page, but I can’t do that because I can’t access the page.

Please help. Any suggestions on how to resolve this issue?