thanks for reply
I did downgrade to fop 2.20 and register it with code, but still have license issue.
console:
#/usr/local/fop2/fop2_server -v
fop2_server version 2.20
web:
FOP2 - Version 2.29.02 - Lite Version - Limited to 15 extensions . Buy it now for unlimited extensions. If you already have a code enter it here