Hello,
Since Google released v1.29.0 of "google-java-format", formatting no longer works on JDK17 :

The changelog says:
The minimum support JDK version to run google-java-format is now JDK 21. Using google-java-format to format earlier versions of the language is still fully supported, but running the formatter itself on JDK 21 or newer is required..
I tried forcing the release-name input to v1.28.0 and it works :

Please, could you make sure that the correct version is selected automatically?