Did you modify some code in Pro? This wasn't happening as of my last post.
My company is the host. The server doesn't yet have PHP 7.2 installed. Although I could install it, I tried changing PHP on the site to 7.1, 7.0, and 5.6, but none of these made a difference.
Also, you'll see from one of my previous comments that I've already tried re-installing Pro, as well as installing Pro on a fresh installation of WordPress.
I really need your help troubleshooting this. I've looked at the line of code where the error is being produced, but I'm not familiar with your theme's code and what other code the erroneous line is causing to execute. You guys are. Please help me here. I'm on a very tight deadline, and if this can't be resolved in the next couple days, I'll have no choice but to go with a different theme.
You guys have been great so far in your responsiveness, especially considering it's the weekend, and I really appreciate that. Unfortunately, I just am at a point where I can't wait much longer to get this fixed. I do want to be able to use Pro, but this issue is beyond me right now.