cd ~/MagicMirror/modules/MMM-Webuntis
node -v
git pull
npm ci --omit=dev

If your local checkout diverged and you do not need local changes, reset after backing up anything important:

cd ~/MagicMirror/modules/MMM-Webuntis
git fetch origin
git reset --hard origin/master
npm ci --omit=dev

If you do have local changes you want to keep, resolve them before resetting.

Check these points:

• your Node version is still at least 22.22.1
• your MagicMirror config still matches the current options
• QR or account credentials still work

If the module starts but shows no data, continue with Troubleshooting.