While checking CSF firewall from WHM >>ConfigServer Security & Firewall No response from subprocess (whostmgr (cpanel)) with exit signal:Internal Server Error500No response from subprocess (whostmgr (cpanel)) with exit signal: 2cpsrvd/11.36.0.9 Server at ***.***.***.***In order to resolve this install the perl module JSON::XSLogin to server with root user and execute the following command. root@server[]/scripts/perlinstaller JSON::XS