[CSE] Potential CSS Security violation

Working on updating a sheet for CSE and I'm getting this error message: How do I find the potential violation?  The sheet layout is fine, but no roll templates are working (and they used).  The CSS for rolltemplate is the same as for the legacy code and when I load the legacy sheet, I don't get the error message. When I exclude the roll template CSS, I still get the error message. I used a CSS validator and I'm not getting any messages that seem to help me.  I get a lot of errors for things that I must do for Roll20, so there's a lot of noise to signal (for example, it tells me I shouldn't over qualify things, but for CSE, especially, I must overqualify).  I'm wondering if there's a way to find what what potential violation is...the console isn't very helpful (at least to me):

Issue resolved...this can be closed. Essentially, if you run into this issue, check your CSS for "eval", "script", and make sure your CSS file doesn't contain: @charset "UTF-8" NOTE: some SASS compilers seem to add the charset stuff, so it may be sneaking in unawares...