Power BI report view as viewer error : Python Script Runtime Error TypeError (app.powerbi.com)

[zawlynn]

Dear Power BI support team and experts,

I have a dashboard page that shows a custom line chart from Power BI python scripts. Everything works as intended on Power BI desktop.

However, every time I tried to view that report page on app.powerbi.com, I get the following error.

Here is my python script.

FYI, my dataframe "dataset" has no float or decimals, all int.

My dataframe, 

import matplotlib.pyplot as plt 
import pandas as pd 
import seaborn as sns
import math


fig, ax = plt.subplots()
sns.lineplot(ax=ax, data = dataset, x='Year_month', y='Budget', hue='office', legend=None)
sns.lineplot(ax=ax, data = dataset, x='Year_month', y='Actual', hue='office', legend=None, linestyle='--')
cust_anno = ['line1','line2','line3','line4','line5','line6','line7','line8','line9','line10','line11','line12']

for line, name in zip(ax.lines, cust_anno)
y = line.get_ydata()
x = line.get_xdata()
if len(y)>0:
ax.annotate(name, xy=(x[-1],y[-1]), xycoords=(ax.get_xaxis_transform(), ax.get_yaxis_transform()), ha="left", va='center', color=line.get_color())
print(ax.get_xaxis_transform())

plt.xticks(dataset.Year_month, dataset.Year_month, rotation=45, ha='right')
plt.tight_layout(pad=0, w_pad=0, h_pad=0)
plt.show()

and Here is my Power BI desktop showing line chart generated by Python as intended.

Thank you very much for your time and helps in advance.

[v-chuncz-msft]

@zawlynn 

The data type for ticks is not appropriate.