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This exception has no message.
java.lang.NullPointerException at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:187) at com.google.common.collect.SingletonImmutableList.<init>(SingletonImmutableList.java:41) at com.google.common.collect.ImmutableList.copyOf(ImmutableList.java:270) at com.atlassian.jira.customfieldhelper.api.InspectionMessageParameter.<init>(InspectionMessageParameter.java:28) at com.atlassian.jira.customfieldhelper.api.InspectionMessageBuilder.addPlainParameter(InspectionMessageBuilder.java:83) at com.atlassian.jira.customfieldhelper.impl.inspector.field.FieldConfigurationInspector.createOkDetails(FieldConfigurationInspector.java:74) at com.atlassian.jira.customfieldhelper.impl.inspector.field.FieldConfigurationInspector.createOk(FieldConfigurationInspector.java:66) at com.atlassian.jira.customfieldhelper.impl.inspector.field.FieldConfigurationInspector.inspect(FieldConfigurationInspector.java:60) at com.atlassian.jira.customfieldhelper.impl.inspector.field.FieldConfigurationInspector.inspect(FieldConfigurationInspector.java:23) at com.atlassian.jira.customfieldhelper.rest.FieldInfoResource.runInspection(FieldInfoResource.java:120) at com.atlassian.jira.customfieldhelper.rest.FieldInfoResource.getInfo(FieldInfoResource.java:104)