Save is not possible in v12

[Xippo]

Hi, thanks for your work. You should propose this project for a budget, i think this extension is super important for newcomers and also for checking the actual state of the art for a basic extension with some relations and so on.

Describe the bug
I setup a clear v12 TYPO3 with the master branch up to date 28.01.25.
disable CSP inside the backend. Setup a simple extension with only one model. An one string property.
After clicking on save, i got the nice animation but in my dev tool i get this one:

Uncaught TypeError: this.service.saveWiring is not a function
saveModule https://rel-rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/js/WiringEditor.js?1723210590:440
loginCheck https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/js/WiringEditor.js?1723210590:400
handleTransactionResponse https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:4187
handleReadyState/this._poll[C.tId]< https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:4167
setInterval handler*handleReadyState https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:4155
asyncRequest https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:4123
saveModule https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/js/WiringEditor.js?1723210590:409
onSave https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/js/WiringEditor.js?1723210590:713
P https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:3206
_simpleAdd https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:3696
_addListener https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:3225
addListener https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:3235
renderButtons https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/js/WiringEditor.js?1723210590:351
WiringEditor https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/js/WiringEditor.js?1723210590:196
https://rel-test.ddev.site/typo3/module/tools/extensionBuilder?token=f5cb56e8a34c1ad3b02f1ac7f299e6f37ee6879e:200
fire https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:3014
_ready https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:3500
_simpleAdd https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:3696
https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:3758
https://rel-test.ddev.site/_assets/705f31da96f0870eac9db412ee92df1f/jsDomainModeling/wireit/lib/yui/utilities/utilities.js?1723210590:3764

TYPO3 Version
12.4.26

Extension Builder Version:
Master 62c8064