Let’s try an experiment.
Put this into your </head> customization:
<style>body { display: none !important; }</style>
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How do you recover?
./launcher enter app+ rails console, which may not be available to every admin of your site (as in, the ones that do have access are asleep).- Use the inspector to delete the CSS rules.
Okay. Now let’s change that bad CSS into bad javascript that causes all pages to not load…