Problem saving gant diagram

[JonAlvarezOgiza]

Hi, I am trying to save the gantt diagram generated by the function render_gantt_plotly in a folder of the project. The problem I am encountering is that if i specify the fig_filename and the format to png in the fig.write_image function and i get the following error:

raise ValueError(startup_response.get("message", "Failed to start Kaleido subprocess"))
ValueError: --plotlyjs argument is not a valid URL or file path: 

No matter what i change that i keep getting this error all the time and i can't figure out how to fix it.
Any help would be appreciated.
Thanks

[tpaviot]

You need the kaleido package, see https://github.com/tpaviot/ProcessScheduler/blob/master/requirements.txt

[JonAlvarezOgiza]

I already have it, and it still shows the same error

[tpaviot]

I cannot reproduce the issue. Are you on Windows or Linux? Googling around points to the same issue here: plotly/Kaleido#57

Do you have spaces or accents in your paths/filenames?

[JonAlvarezOgiza]

I did, when i replaced the accents it didn´t show the error anymore but it gets stuck on the render_gantt_plotly function as it was iterating over it forever. It only happens when i add the fig_filename parameter while calling the function. Using html_filename parameter it works