Question can't run shell_exec(npm run production) from laravel controller

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So I'm just trying to run shell_exec(/opt/plesk/node/12/bin/npm run production) from my laravel php controller after editing some text and css codes through php so the vue files get compiled again and the changes are being displayed but I just can't get it to work no matter what I try. Can't seem to get any error code or anything out of it either, I've just got no clue what to do at this point. Been searching some other posts in this forum or on google but can't really seem to find an answer. Was wondering if anyone here would know how to fix this.

When I run this code on localhost it works just fine, sorry if it's a noob question but I'm new to plesk. Just trying to get my laravel/vue app working online.