Pig script can be run via SSH but not Pig Editor

Hi there,
I am new to the HDP. I have installed 2.3 virtualBox on my machine. I made my pig scripts working via SSH, but could not make them working via the Pig Editor. It always gives me the error of “Could not resolve org.apache.hive.hcatalog.pig.HCatLoader”. I know this could be an environment issue. (remember my pig scripts are working fine in SSH). My question is that when I hit the “execute” button on web, what command does it send into? Does it call /usr/bin/pig? I even made the /usr/bin/pig invalid. it was still giving me the same error.