I am also having this same issue!!
When I looked at the aviaAsset_avia-head-scripts option value, it was filled with 7 megabytes of
s:21:\"error-generating-file\";s:66:\"avia-head-scripts-593c1b88ec833ab2d...
repeated
I ran this query monitor plugin https://wordpress.org/plugins/query-monitor/
and noticed that WordPress was running a massive update script on every page load to set this massive 7mb value.
This was why my site was running slow.
I updated to the latest Enfold theme (4.7.3) and cleared out the aviaAsset_avia-head-scripts value in the wp_options table.
This brought my website back to full speed, but the aviaAsset_avia-head-scripts value is slowly filling back up with the same error, so I believe I’ve only temporarily fixed the issue.
This is the page we saw those errors on. We have php on our live site set to hide errors, but they’re still showing up in our logs.
Alright, thanks for the reply!