[fix] Be able to display error messages in additional info as it is

[nabenabe0928]

Since the latest version print additional info as dict, it does not show the error as it is supposed to be looked like.

[ravinkohli]

Hey, Thanks for this PR. I have requested some minor changes.

[codecov]

Codecov Report

Merging #225 (7d2a396) into development (8237f2c) will decrease coverage by 0.05%.
The diff coverage is 83.33%.

@@               Coverage Diff               @@
##           development     #225      +/-   ##
===============================================
- Coverage        81.76%   81.70%   -0.06%     
===============================================
  Files              151      151              
  Lines             8641     8647       +6     
  Branches          1326     1328       +2     
===============================================
  Hits              7065     7065              
- Misses            1104     1108       +4     
- Partials           472      474       +2     

Impacted Files	Coverage Δ
autoPyTorch/api/base_task.py	84.50% <62.50%> (-0.15%)	⬇️
autoPyTorch/evaluation/abstract_evaluator.py	75.89% <100.00%> (ø)
autoPyTorch/evaluation/tae.py	67.57% <100.00%> (ø)
autoPyTorch/evaluation/train_evaluator.py	87.20% <100.00%> (ø)
autoPyTorch/optimizer/smbo.py	79.83% <100.00%> (ø)
autoPyTorch/utils/common.py	87.87% <100.00%> (+0.78%)	⬆️
...ipeline/components/setup/network_backbone/utils.py	87.21% <0.00%> (-1.51%)	⬇️
autoPyTorch/ensemble/ensemble_builder.py	73.58% <0.00%> (-0.63%)	⬇️

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