How do you Troubleshoot a Critical Error on a WordPress Site in MS Edge Browser?

The thing is my website that is designed in WordPress was displaying normal in all other browsers except for Microsoft Edge. Actually, if I opened an Edge Private Window it displayed just fine there as well. To save you the time of researching this error (took me about 3 hours of searching for ideas) here's the solution.

Turns out that it's usually an addon plugin that had a recent update that causes the problem. In my case I found the culprit to be a popular plugin called Elementor. To figure out which plugin was causing the problem I had to deactivate them one by one and then check my site, then reactivate them until I finally found the problem was Elementor. When I deactivated Elementor my site loaded just fine. The interesting part is that, despite its popularity I never used it anyway. In the end I just deleted it.

After the fact I also discovered by checking my site health in WordPress I also discovered that the version of PhP I was running was old. I updated it to the newest version because it may have been part of the conflict with the Edge browser not displaying my site.

I posted this because earlier this morning I found another site that was displaying the same WordPress error.
Hoping this helps you fix it!

I faced this once after updating a plugin. At first I thought it was an Edge browser issue, but it turned out to be a plugin conflict. I enabled WP_DEBUG in wp-config.php to check the error log, then disabled all plugins and activated them one by one until I found the culprit. If that doesn't help, switching to a default WordPress theme and checking the PHP version is also worth trying. That solved it for me.