TYPO3 Core

I've got the same issue. Were you able to resolve this?

Edit: I'm using 11.3.3

Here's the solution: https://docs.typo3.org/c/typo3/cms-core/master/en-us/Changelog/11.0/Breaking-93048-BackendURLRewrites.html

The same problem is in MAMP on Windows 10

Just had the same error with TYPO3 11.5.8 on a fresh XAMPP installation:
/typo3/index.php works and /typo3/install.php works, but I can't log into the backend.

Instead I get a 404 error from /typo3/login?loginProvider=1433416747.

The frontend error makes sense though, because TYPO3 11 was just installed, and there are no pages or site config yet.

The frontends and backends of TYPO3 9 and 10 installations on the same XAMPP work fine.

I might also add that all three TYPO3 installations were done using the "classic way", and not with composer.

Still the same error on 11.5.22, but only if you select "Take me straight to the backend" during the installation process (step 5/5).

If you select "Create empty starting page" or "Yes, download the list of distributions" instead, everything works.

In /typo3/sysext/install/Classes/Controller/InstallerController.php "case 'donothing'" is missing in executeDefaultConfigurationAction(), and so $nextStepUrl isn't defined in this case. Not sure if this would make a difference...

Dominik Weber wrote in #note-4:

Here's the solution: https://docs.typo3.org/c/typo3/cms-core/master/en-us/Changelog/11.0/Breaking-93048-BackendURLRewrites.html

How do I do this with the Symfony Local Web Server, which we use on local machines to develop?

Setting up the first v11 project and I can't get past the FIRST_INSTALL...

Edit: It does work with the PHP Development Server.