About coderoad.start issue

Does anyone know how to sort out the coderoad.start not found issue. Not able to continue now.

Are you at the start of a course? Or is this happening after you have done a good number of steps?
You may have to delete the container and restart.

It started right after around 40% of the course completion. The application is taking long time to start, it takes multiple refreshes to start the course. During this process somehow this error came up.

The main problem is with the loading remote environment page. It takes a lot of time and a lot of refreshes too. Tried to check if this problem is with a specific browser, but it is having problem with brave, chrome and firefox also. Is there any solution to this problem.