ClassNotFoundException: io.swagger.v3.oas.models.OpenAPI on Gradle's generateOpenapi

[gavenkoa]

With Gradle 7.4:

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath "io.crnk:crnk-gen-gradle:${crnkVersion}"
        classpath "org.reflections:reflections:0.10.2"
    }
}

apply plugin: 'crnk-gen'
crnkGen {
    runtime {
        // Gradle classpath configuration to use
        configuration = 'runtimeClasspath'
    }

    openapi {
        enabled = true
        genDir = file('${projectRoot}/build/openapi')
    }
}

gradle generateOpenapi fails as:

> Task :generateOpenapi FAILED

Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0.

You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.

See https://docs.gradle.org/7.4/userguide/command_line_interface.html#sec:command_line_warnings
1 actionable task: 1 executed
Exception in thread "main" java.lang.IllegalStateException: failed to generate class io.crnk.gen.openapi.OpenAPIGeneratorModule, source=null
    at io.crnk.gen.gradle.task.ForkedGeneratorMain.main(ForkedGeneratorMain.java:37)
Caused by: java.lang.NoClassDefFoundError: Lio/swagger/v3/oas/models/OpenAPI;
    at java.base/java.lang.Class.getDeclaredFields0(Native Method)
    at java.base/java.lang.Class.privateGetDeclaredFields(Class.java:3061)
    at java.base/java.lang.Class.getDeclaredFields(Class.java:2248)
    at com.fasterxml.jackson.databind.introspect.AnnotatedFieldCollector._findFields(AnnotatedFieldCollector.java:73)
    at com.fasterxml.jackson.databind.introspect.AnnotatedFieldCollector.collect(AnnotatedFieldCollector.java:48)
    at com.fasterxml.jackson.databind.introspect.AnnotatedFieldCollector.collectFields(AnnotatedFieldCollector.java:43)
    at com.fasterxml.jackson.databind.introspect.AnnotatedClass._fields(AnnotatedClass.java:371)
    at com.fasterxml.jackson.databind.introspect.AnnotatedClass.fields(AnnotatedClass.java:343)
    at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector._addFields(POJOPropertiesCollector.java:494)
    at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector.collectAll(POJOPropertiesCollector.java:421)
    at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector.getPropertyMap(POJOPropertiesCollector.java:386)
    at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector.getProperties(POJOPropertiesCollector.java:233)
    at com.fasterxml.jackson.databind.introspect.BasicBeanDescription._properties(BasicBeanDescription.java:164)
    at com.fasterxml.jackson.databind.introspect.BasicBeanDescription.findProperties(BasicBeanDescription.java:239)
    at com.fasterxml.jackson.databind.deser.BasicDeserializerFactory._findCreatorsFromProperties(BasicDeserializerFactory.java:328)
    at com.fasterxml.jackson.databind.deser.BasicDeserializerFactory._constructDefaultValueInstantiator(BasicDeserializerFactory.java:272)
    at com.fasterxml.jackson.databind.deser.BasicDeserializerFactory.findValueInstantiator(BasicDeserializerFactory.java:223)
    at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.buildBeanDeserializer(BeanDeserializerFactory.java:261)
    at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.createBeanDeserializer(BeanDeserializerFactory.java:150)
    at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer2(DeserializerCache.java:415)
    at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer(DeserializerCache.java:350)
    at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:264)
    at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)
    at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:142)
    at com.fasterxml.jackson.databind.DeserializationContext.findRootValueDeserializer(DeserializationContext.java:642)
    at com.fasterxml.jackson.databind.ObjectReader._prefetchRootDeserializer(ObjectReader.java:2376)
    at com.fasterxml.jackson.databind.ObjectReader.<init>(ObjectReader.java:193)
    at com.fasterxml.jackson.databind.ObjectMapper._newReader(ObjectMapper.java:754)
    at com.fasterxml.jackson.databind.ObjectMapper.readerFor(ObjectMapper.java:4130)
    at io.crnk.gen.gradle.task.ForkedGeneratorMain.main(ForkedGeneratorMain.java:26)
Caused by: java.lang.ClassNotFoundException: io.swagger.v3.oas.models.OpenAPI
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
    ... 30 more

FAILURE: Build failed with an exception.

I think new Gradle versions handle plugin classpath differently... Adding

 classpath "io.swagger.core.v3:swagger-project:2.2.0"

doesn't solve the problem. May be another version is required.