no entry for terminal type "unknown"; using dumb terminal settings error

I was having an issue with my BASH script when I ran the command: php composer.phar install. The error outputted this to STDERR:

No entry for terminal type "unknown";
using dumb terminal settings.

After a bit of digging around, I managed to fix it by adding this line of code to the beginning:

export TERM=dumb

Once I added that, it cleared the STDERR. 
