🐛 [BUG] Error while saving: Server responded with Status-Code: 500 Statustext: Internal Server Error
Describe the bug An error occurs when saving an extension. Error while saving: Server responded with Status-Code: 500 Statustext: Internal Server Error Resonse:
Oops, an error occurred! Argument 1 passed to EBT\ExtensionBuilder\Service\ExtensionSchemaBuilder::build() must be of the type array, null given, called in C:\xampp\htdocs\git\typo3-musikrat\public\typo3conf\ext\extension_builder\Classes\Service\RoundTrip.php on line 170
To Reproduce Steps to reproduce the behavior:
- Go to 'Domain Modelling'
- Create an extension
- Click on the save button
- See error
Expected behavior Save successfull.
Screenshots yes
TYPO3 Version 10.4.32
Extension Builder Version: Git-branch v. 10.0.5

It seem that a first save works, but all following saves doesn´t work anymore.
Hello @fixpunkt-systeme I cannot reproduce this issue. Can you maybe send me your extension via Slack? You can find me there with the name "treupo".
I don´t think its the extension itself. I tried 2 extensions. I think its the combination of a windows-system (with XAMPP) and the composer- & git-version of extension_builder
I will try this with a Windows VM, as I don't have a physical windows computer to test it.
I got the 500er error shown when I renamed a model name. The detailed message is a bit different then, it says that it can't stringify an object. A workaround is to rename the model in ExtensionBuilder.json and load it new in the extensionBuilder. I'm not sure now if it can also happen if the extension key or vendor is renamed.
And the message from @fixpunkt-systeme looks like s/he left a model name blank perhaps, but usually it's not possible as there is another warning then.
Anyway, the description "Create an extension" is very vague and doesn't give any clue where exactly it could happen.