Our site is hosted on WP Engine and autoptimize worked as expected on dev and staging but when I activated it on production (with WP Engine caching and CDN) I got the following error in the console:
Failed to execute ‘insertRule’ on ‘CSSStyleSheet’: Cannot access StyleSheet to insertRule
Unchecking “optimize CSS Code” eliminates the error.
Any advice on how to further diagnose and correct the issue would be greatly appreciated.
The page I need help with: [log in to see the link]
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