Stackplot ‘isfinite’ Error

I was trying to do a stackplot basically like this,


Figure from:

The code was the following,

import pandas as pd
import matplotlib.pyplot as plt
import numpy as np

f = “move_user_prop_dist.csv”
df1 = pd.read_csv(f).set_index(“dist_bin_center”)
df1 = df1.drop(df1.columns[0],axis=1).transpose()

x = np.array(df1.index)
y1 = df1[25]
y2 = df1[75]
y3 = df1[125]

fig,ax = plt.subplots()
y = np.vstack((y1,y2,y3))


However, Error comes out:

TypeError: ufunc ‘isfinite’ not supported for the input types, and the inputs could not be safely coerced to any supported types according to the casting rule ”safe”

Found no solution online so far. Suggestions welcomed.