Laravel shell_exec command js-beautify not run working

I'm trying to run

echo shell_exec(' echo 3');
echo shell_exec('cat m.html | js-beautify  --type html -o m.html ; echo 43');
echo shell_exec(' echo 53');

I got as an output

3 53

and m.html is not beautified also when I run the same command through command line the file is beautified.

via Chebli Mohamed