Safari Content Blocker extension

I have integrated the Safari Content Blocking extension, and it works perfectly on the first run, effectively blocking content on Safari. However, after re-installing the app, I occasionally encounter the following error, despite the content blocker functioning as expected:

"Failed to reload content blocker Error Domain=SFErrorDomain Code=3 "(null)""

What could be causing this intermittent error?

Safari Content Blocker extension
 
 
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