a6a1be803d
This PR was squashed before being merged into the 4.3-dev branch (closes #30024).
Discussion
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[Debug] Display more details in the simple error page of Debug
| Q | A
| ------------- | ---
| Branch? | master
| Bug fix? | no
| New feature? | yes
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | #29891
| License | MIT
| Doc PR | -
Note: this only changes the simple error page of Debug component, which is different from the full-featured error page of WebProfilerBundle.
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#29891 shows a confusing error page. In #29928 we improved the first error message displayed to the user. In this PR we implement @nicolas-grekas' idea to replace the generic error page title by a better error message. So, this PR + #29928 would fix #29891 to me.
### Before
![error-before](https://user-images.githubusercontent.com/73419/51920135-1519b500-23e5-11e9-99d6-e9b631b97499.png)
### After
![error-after](https://user-images.githubusercontent.com/73419/51920141-1945d280-23e5-11e9-97c3-49b2170dbd15.png)
Commits
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