PHOENIX-2387 Fix sandbox error printing
PHOENIX-2387 Fix sandbox error printing

Use the correct sys field (stderr) to write out the error message
if the project has not been built before starting the sandbox.

shehzaadn/phoenix,growingio/phoenix,jfernandosf/phoenix,apurtell/phoenix,dumindux/phoenix,apurtell/phoenix,growingio/phoenix,apache/phoenix,apache/phoenix,apache/phoenix,shehzaadn/phoenix,djh4230/Apache-Phoenix,jfernandosf/phoenix,twdsilva/phoenix,shehzaadn/phoenix,dumindux/phoenix,growingio/phoenix,AyolaJayamaha/phoenix,twdsilva/phoenix,AyolaJayamaha/phoenix,jfernandosf/phoenix,Guavus/phoenix,apurtell/phoenix,rvaleti/phoenix,rvaleti/phoenix,rvaleti/phoenix,rvaleti/phoenix,ohadshacham/phoenix,jfernandosf/phoenix,growingio/phoenix,RCheungIT/phoenix,7shurik/phoenix,AyolaJayamaha/phoenix,apurtell/phoenix,Guavus/phoenix,AyolaJayamaha/phoenix,7shurik/phoenix,Guavus/phoenix,djh4230/Apache-Phoenix,growingio/phoenix,ankitsinghal/phoenix,7shurik/phoenix,RCheungIT/phoenix,djh4230/Apache-Phoenix,ankitsinghal/phoenix,ohadshacham/phoenix,ankitsinghal/phoenix,ohadshacham/phoenix,twdsilva/phoenix,Guavus/phoenix,Guavus/phoenix,rvaleti/phoenix,ohadshacham/phoenix,apache/phoenix,ohadshacham/phoenix,djh4230/Apache-Phoenix,twdsilva/phoenix,shehzaadn/phoenix,djh4230/Apache-Phoenix,RCheungIT/phoenix,ankitsinghal/phoenix,apache/phoenix,shehzaadn/phoenix,AyolaJayamaha/phoenix,7shurik/phoenix,RCheungIT/phoenix,twdsilva/phoenix,apurtell/phoenix,jfernandosf/phoenix,ankitsinghal/phoenix,RCheungIT/phoenix