When I attempt to update Minecraft Server to 1.17 (in the new Java version) McMyAdmin returns this error:
JNI error has occurred, please check your installation and try again thread "main" java.lang.UnsupportedClassVersionError: net/minecraft/server/Main has been compiled by a more recent version of the Java Runtime (class file version 60.0), this version of the Java Runtime only recognizes class file versions up to 52.0
I have tried to update Java over ssh, but it does not change the outcome.