Hi Hitesh, Have you installed AEM 6.3 Forms add-on package [0] ? Also, we need to migration utility to migrate  Adaptive Forms , please follow the documentation at [1][0] AEM Forms releases [1] Migrate AEM Forms assets and documents ThanksNitin

Hi Alex,  It usually means some issue with either XDP, data or fonts. Exact cause of this error is printed just before this exception in logs. If you can share entire error.log file from crx-quickstart/logs/ then we should be able to help in identifying the root cause.ThanksNitin