Hello @marcink-lwR9iu ,What's the AEM Forms Version you are using on your Instance ?Please try this on any version greater than SP18.Thanks,Utkarsh

Hi @Amreen1 ,Seems to be a JDK Issue.Are you using JDK Version 9+ for this Project ?Could we please use any version below JDK <=8 (jdk 1.8) and test this out.I think lowering the Java Version will work here.Please let us know in case otherwise.Thanks,Utkarsh

@AnushaAt : It seems you have already submitted support ticket for this issue - E-001288023.If yes, let's continue on the support ticket.Regards,Utkarsh

Hi @alistairp781078 ,The issue that you are reporting here is for AEM Forms 6.5.x On-Prem OR AEMFaaCS ?I have also encountered a similar error for AEM Forms 6.5.17 On- Prem Instance and was able to fix the issue.Please let me know.Thanks,Utkarsh