java.util.UnknownFormatConversionException: Conversion = 'm'

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java.util.UnknownFormatConversionException: Conversion = 'm'
at java.util.Formatter$FormatSpecifier.conversion(Formatter.java:2691)
at java.util.Formatter$FormatSpecifier.(Formatter.java:2720)
at java.util.Formatter.parse(Formatter.java:2560)
at java.util.Formatter.format(Formatter.java:2501)
at java.io.PrintStream.format(PrintStream.java:970)
at java.io.PrintStream.printf(PrintStream.java:871)
at undefined.LABEX03.main(LABEX03.java:16)

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