I think it might have been an invalid option or an inconsistent data stored.
I have resolved the issue by loading the default theme first, then importint it. In case the problem occures again:
– Step 1, load the default: https://i.imgur.com/jxgSbzQ.png
– Step 2, import
I will investigate this on my local server to see if I can re-create it. It should be working okay now, I have loaded the theme and save the options for you.Best,
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