After adding sandbox entitlement to exec file, can't run exec through app

Before adding the sandbox entitlement to the exec file, the app ran perfectly. After adding the entitlement properties below, I get an error:
my.sh: line 2: 41382 Killed: 9 $1 $2 "$3" $4 "$5"


Entitlement properties added:
<key>com.apple.security.app-sandbox</key>
<true/>
<key>com.apple.security.inherit</key>
<true/>

I'm signing with my Apple Development identity. I tried also by signing with my 3rd Party Mac Developer Application. 

Lastly, I am running this exec through a plugin, I don't know if that could be the cause of the error. Please help.