Show exception type in panel title.

[kindermannhubert]

Resolves #335.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 77.3%. Comparing base (9746e7f) to head (09748ae). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #339 +/- ## ===================================== Coverage 77.3% 77.3% ===================================== Files 83 83 Lines 5607 5607 Branches 736 736 ===================================== Hits 4335 4335 Misses 998 998 Partials 274 274 ```

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