Kermel always connecting

**Describe the bug**
The lab gets stuck midway and doesn't work, the kernel is always connecting, cant save and if I open project again it doesn't load at , just keeps buffering.

**To Reproduce**
Steps to reproduce the behavior:
Midway thru the project it gets stuck

**Expected behavior**
The lab gets stuck midway and doesn't work, the kernel is always connecting, cant save and if I open project again it doesn't load at , just keeps buffering. shows the below eroro

"Server Connection Error
A connection to the Jupyter server could not be established. JupyterLab will continue trying to reconnect. Check your network connection or Jupyter server configuration.
"
**Screenshots**
If applicable, add screenshots to help explain your problem.

**Desktop (please complete the following information):**
- OS: windows
- Browser chrome
- Version [e.g. 22]

**Additional context**
Add any other context about the problem here.

Start by reproducing the issue in SageMaker Studio Lab with Chrome on Windows and review the reported Jupyter server connection error. Investigate the kernel's connection, saving, and project reload behavior; done means the kernel connects reliably and the lab can save and reopen the project.

Written by the indexing model from the issue text.