Changes to campaign settings not saving, stuck processing

I have been trying to make some changes to my 5e campaign settings, but the changes never save and it gets stuck "processing" 15+ minutes at this point.  Have already cleared Google Chrome cache.

Would you please carefully work through the first three steps of our guide to Solving Technical Issues?

• Step 1: Make sure to use the right browser
  • Please check if these issues persist when using both Chrome and Firefox.
• Step 2: Ensure that there are no extensions/addons interfering with Roll20
  • Please disable all add-ons/extensions and anti-virus programs.
• Step 3: Clear your cache

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If none of the above succeeds, please thoroughly work through Step 4. (Don't forget the complete Console Log)

Thank you!

Browser:  Google Chrome
Version: Version 66.0.3359.139 (Official Build) (64-bit)
OS: Windows 10
Javascript: Yes
Antivirus: Defender
Extensions:  Adblock Plus, RES, AutoCardAnywhere

Console Log:  3173609:90 Mixed Content: The page at 'https://app.roll20.net/campaigns/campaignsettings/3173609' was loaded over HTTPS, but requested an insecure image 'http://www.drivethrurpg.com/images/44/203580-thumb140.jpg'. This content should also be served over HTTPS.
jquery-migrate-3.0.0.min.js:2 JQMIGRATE: Migrate is installed, version 3.0.0
3173609:1740 Uncaught TypeError: Cannot read property 'default' of undefined
at 3173609:1740
at Function.b.each.b.forEach (v2.js?1519751126:5)
at HTMLAnchorElement.<anonymous> (3173609:1730)
at HTMLAnchorElement.dispatch (v2.js?1519751126:2)
at HTMLAnchorElement.g.handle (v2.js?1519751126:2)

Made a test game, and the same thing is happening there too