Here's the code I'm working on:

```
!pip install pylatexenc
!pip install pillow

qc = QuantumCircuit(2)
qc.x(0)
qc.cz(0,1)
qc.x(0)
qc.draw('latex')

```

However there's an error:

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

```

What should I do to make it work? Thanks!!