I do see things working currently on that test, but as mentioned previously, it has been very intermittent. Have you been able to confirm the errors sent in my first message? Without any resolution to what was causing that error, I’m very uneasy about knowing this is truly solved.
In our testing, it appears that with the PDF Viewer plugin turned off, downloading files and navigating the site runs more normally and faster. The previews are loading slower than normal and creating all kinds of site speed and preview issues.
We use Wordfence for added security and have found noted vulnerabilities with the Download Manager plugin (https://www.wordfence.com/threat-intel/vulnerabilities/wordpress-plugins/download-manager) which maybe tracks with the fatal errors being called out by Flywheel, our host.
I do appreciate you digging in on this, but we are not comfortable with the answer that there must be a plugin conflict, especially when it appears there are issues happening with Download Manager itself.
I plan to do scheduled “maintenance” at 6 p.m. CST tonight to try to identify any plugin conflicts but I don’t anticipate that revealing much since the errors do seem to be intermittent and worse during business hours when there is traffic on the site.
