I can't execute code cells or restart the kernel during my exam.

In this case, try the following:

  1. Interrupt the kernel: Use the shortcut Esc + I + I.
  2. Restart the kernel: Click the "Restart Kernel" button at the bottom of the left menu.
  3. Reload the page: Press CTRL + R.

If these steps don't work, we recommend continuing the exam and providing feedback at the end so that the graders can address the issue.