AttributeError: ’FStringStart’ object has no attribute ’children’

[dangom]

Just started experimenting with LSP for Python in Emacs.
The following code will raise an AttributeError:

import numpy as np

def func(foo, test):
    baz = np.unique(test[f's{foo}'].values)
    return baz

The error happens when the cursor is positioned between e in np.unique and (.
Any idea how to fix this?

Thanks for the project!

[bryango]

Another example:

# module `helpers.py`
mainfont = 'Anka/Coder Condensed'
argos_fontset = f" | font='{mainfont}'"

Then, from helpers import argos_fontset, pyls crashes (in atom). Same error message in console.