the error happens just before your latest message when open the product page.
I do not think the error log is recorded in woocommerce log, since the error is from PHP should be recorded in the error_log file.
By the way I just disabled the cache plugin so you no need to worry about the cache during the testing.
About the product tabs issue definitely after upgrading to 7.2.5. So I doubt the problem from other plugins.
If you check and debugging through the chrome dev tools on attribute element changes, your frontend js is changing the CSS element style
