I have a project PHP in my droplet LEMP 16.04 with script python, when I run in terminal is ok, but when I run in the browser don't execute the script.

My PHP

$vehicleJSON = shell_exec('python vehiclepy.py ' . $plate);

I've already tried:

1. change to $vehicleJSON = shell_exec('python vehiclepy.py ' . $plate . ' 2>&1');
2. change to $vehicleJSON = shell_exec('usr/bin/python /var/www/myapp/vehiclepy.py ' . $plate);
3. add in sudoers www-data NOPASSWD: /var/www/myapp but don't execute.

Please help me kkkkk, thanks!