If you are doing Unity Project. You can get this error.
Command PhaseScriptExecution failed with a nonzero exit code
The solution is very simple
https://forum.unity.com/threads/error-on-build.561706/
Pre-requisites: Have cocoapods installed
Not Needed: 1. Install "cocoapods"
for installing run following line in your terminal: $sudo gem install cocoapods
chmod +x MapFileParser.sh
chmod +x process_symbols.sh
It worked for me)
I think that installing "cocoapods" is not necessary, only step 3 and 4 enough to solve, but it does not work, you can try it.