If P4 credentials are configured, then JCasC fails to export Jenkins configuration with an error:

FAILED TO EXPORT com.cloudbees.plugins.credentials.domains.DomainCredentials#credentials: java.lang.IllegalArgumentException: argument type mismatch
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at io.jenkins.plugins.casc.impl.configurators.DataBoundConfigurator.describe(DataBoundConfigurator.java:255)
at io.jenkins.plugins.casc.impl.configurators.HeteroDescribableConfigurator.lambda$convertToNode$de0cd4f8$1(HeteroDescribableConfigurator.java:224)
at io.vavr.CheckedFunction0.lambda$unchecked$52349c75$1(CheckedFunction0.java:201)
at io.jenkins.plugins.casc.impl.configurators.HeteroDescribableConfigurator.convertToNode(HeteroDescribableConfigurator.java:224)
at io.jenkins.plugins.casc.impl.configurators.HeteroDescribableConfigurator.lambda$describe$5(HeteroDescribableConfigurator.java:103)
at io.vavr.control.Option.map(Option.java:373)
at io.jenkins.plugins.casc.impl.configurators.HeteroDescribableConfigurator.describe(HeteroDescribableConfigurator.java:103)
at io.jenkins.plugins.casc.impl.configurators.HeteroDescribableConfigurator.describe(HeteroDescribableConfigurator.java:51)
at io.jenkins.plugins.casc.Attribute.describe(Attribute.java:194)
at io.jenkins.plugins.casc.impl.configurators.DataBoundConfigurator.describe(DataBoundConfigurator.java:264)
at io.jenkins.plugins.casc.Attribute.describe(Attribute.java:194)
at com.cloudbees.plugins.credentials.casc.SystemCredentialsProviderConfigurator.describe(SystemCredentialsProviderConfigurator.java:76)
at com.cloudbees.plugins.credentials.casc.SystemCredentialsProviderConfigurator.describe(SystemCredentialsProviderConfigurator.java:48)
at io.jenkins.plugins.casc.Attribute.describe(Attribute.java:198)
at com.cloudbees.plugins.credentials.casc.CredentialsRootConfigurator.describe(CredentialsRootConfigurator.java:90)
at com.cloudbees.plugins.credentials.casc.CredentialsRootConfigurator.describe(CredentialsRootConfigurator.java:52)