Hi all,
I used to have a successfully deployed app using the plotly timeline graph but since a few months I always have the error
TypeError: Object of type timedelta is not JSON serializable
I used the same code below in my IDE and it works so I am a bit confused on the issue, I updated to streamlit-1.27.2 and the issue remains
import plotly.express as px
import pandas as pd
df = pd.DataFrame([
dict(Task="Job A", Start='2009-01-01', Finish='2009-02-28'),
dict(Task="Job B", Start='2009-03-05', Finish='2009-04-15'),
dict(Task="Job C", Start='2009-02-20', Finish='2009-05-30')
])
fig = px.timeline(df, x_start="Start", x_end="Finish", y="Task")
fig.update_yaxes(autorange="reversed") # otherwise tasks are listed from the bottom up
st.plotly_chart(fig)