java.lang.IllegalArgumentException: Bad level "DEBUG"

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java.lang.IllegalArgumentException: Bad level "DEBUG"
at java.util.logging.Level.parse(
at org.apache.juli.FileHandler.configure(
at org.apache.juli.FileHandler.(
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(
at java.lang.reflect.Constructor.newInstance(
at java.lang.Class.newInstance0(
at java.lang.Class.newInstance(
at org.apache.juli.ClassLoaderLogManager.readConfiguration(
at org.apache.juli.ClassLoaderLogManager.readConfiguration(
at java.util.logging.LogManager$
at Method)
at java.util.logging.LogManager.readPrimordialConfiguration(
at java.util.logging.LogManager.getLogManager(
at java.util.logging.Logger.(
at java.util.logging.LogManager$RootLogger.(
at Method)
at java.util.logging.LogManager.(

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