Try this first
Safe Mode gets you to your notes
If the last launch didn’t finish, Canto starts in Safe Mode, without the parts that load models and background work. Load the model from its banner when you’re ready.
The helper that reads images, speech and audio restarts from Settings › Advanced › Helpers › Restart. Help › Send Diagnostics… shows the whole report before it sends anything, then gives you a reference: put it in step 3.