Cannot install SPFX package using Site Scripts

We’ve noticed that for at least 5-6 days, we can no longer install SPFX packages using Site Design. Here is the very minimum sample that replicates the issue:


{     "$  schema": "schema.json",     "actions": [         {             "verb": "installSolution",             "id": "{AppPackageId:ContosoCentral}"         }             ],     "version": 1   } 

Error message:

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SPFX package is deployed to the App Catalog with no errors:

enter image description here

Installing the SPFX app without Site Designs works perfectly fine:

enter image description here


  • Does anyone have the same issue (please, reply in comments)
  • Main question: Is there a workaround for this? Anything we can do to solve it?
  • Is there a way to get more information about the error? Install SPFX Solution: Something went wrong and we could not complete this action sounds awefully unhelpful.

Any help will be greatly appreciated!


I’ve found related issue in GitHub: Cannot Install SPFx Solution or Activate Custom Feature using a Site Design #3543, but I don’t see any resolutions.