Status Code 413

[BillyChinUML]

When I tried to create a visualization with a data set that contains around 6900 data points, from the user point of view, it looks like I was stuck on the loading screen for a few minutes. However, when I dug deeper and used Google Chrome developer tools, I discovered that I got a Status Code 413 error when I looked at the network tab and clicked on visualizations. Here's the image link: https://imgur.com/a/Tc65tjV