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when i run this command in terminal,
'''
antlr4 -v 4.13.0 -Dlanguage=Python3 Expr.g4
'''
i got errors as follow
'''
error(2): unknown command-line option -v
error(7): cannot find or open file: 4.13.0
error(7): cannot find or open file: Expr.g4
'''
I thought '-v 4.13.0' is redundant, so I modified this command and deleted it