FileNotFoundError: [Errno 2] No such file or directory: 'matlab': 'matlab'

I get an error when I execute the following code on ubuntu, what should I do?
```
import transplant
import sys
import numpy as np
sys.setrecursionlimit(30000)
matlab = transplant.Matlab(jvm=False, desktop=False)
matlab.disp("Hello, World")
```