I am updating a code from spring boot 2.7.3 to 3.0.0 and I am facing .

My guess is one of the dependencies is not compatible with Java 21 … but can’t find which one is it .

Any help ?

Caused by: java.io.IOException: ASM ClassReader failed to parse class file - probably due to a new Java class file version that isn't supported yet: file [/home/my-user/src/springboot/services/template-db-api/build/classes/kotlin/main/com/company-x/DualApiApplication.class]
    at org.springframework.core.type.classreading.SimpleMetadataReader.getClassReader(SimpleMetadataReader.java:59) ~[spring-core-6.0.2.jar:6.0.2]
    at org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:48) ~[spring-core-6.0.2.jar:6.0.2]
    at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:103) ~[spring-core-6.0.2.jar:6.0.2]
    at org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader(CachingMetadataReaderFactory.java:122) ~[spring-core-6.0.2.jar:6.0.2]
    at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.scanCandidateComponents(ClassPathScanningCandidateComponentProvider.java:434) ~[spring-context-6.0.2.jar:6.0.2]
    ... 20 common frames omitted```