An old version of Java may be why the JNI error has occurred in Minecraft. To fix this issue, you’ll need to install the latest JDK (Java Development Kit). However ...

Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/type/TypeReference ...

I upgraded my checkstyle environment with checkstyle-8.15-all.jar. Unfortunatelly, I've got an error: 2018-12-11 10:28:11 [WARN] Error: A JNI error has occurred ...