While previewing a newly created webapp, you may experience the following error “Error : JST-310039 Privilege escalation forbidden for ‘Anonymous account’. ctx _console=“1” lang=“en” score=“0”/”
Please note you will need to enable debug mode.
The option “XtkSecurity_Allow_PrivilegeEscalation should be equal to 1” if it doesn’t exist, you will have to create it.
I have created this option in the instance, and now the web app preview is working fine.