"An unexpected error has occurred." when launching swift.

[pogosjan12]

Describe the bug
Whenever i launch a file that launches swift there is a chance for it to fail. If that happens I manually kill the script with the the terminal and launch it again. I have not noticed anything that causes it specifically, it feels like it just happens randomly. Sometimes it appears 5 times in a row before it works once and sometimes it does not show up for a couple of tries. The error happens when the simulation should open up in the browser but instead i get a white screen with the error message : "An unexpected error has occurred.".

Version information

I run the scripts in a docker environment with Ubuntu 22.04.4 and have the following versions installed :

• numpy==1.24.4
• roboticstoolbox==1.0.3
• python==3.10.12

I did nothing else to the files from the first script i tried up to the ones where i changed a lot myself this problem always showed up. Even the first time i was trying out the RTB, which was outside of a docker container the problems still occurred. It is just very annoying to deal with.