Symptoms

File Manager does not work on a new NG server:

Invalid backend response.
Data is not JSON.

pemcln group has ID different from 10003:

# grep pem /etc/group
pemcln:x:10001:

Cause

pemcln group was added before the NG related installation tasks. As a result, it has incorrect ID.

Resolution

Make sure pemcln group has the ID of 10003 on the NG server.

# groupdel pemcln
# groupadd -g 10003 -f pemcln

Internal content