at joptsimple.OptionException.unrecognizedOption(OptionException.java:108)
        at joptsimple.OptionParser.validateOptionCharacters(OptionParser.java:633)
        at joptsimple.OptionParser.handleShortOptionCluster(OptionParser.java:528)
        at joptsimple.OptionParser.handleShortOptionToken(OptionParser.java:523)
        at joptsimple.OptionParserState$2.handleArgument(OptionParserState.java:59)
        at joptsimple.OptionParser.parse(OptionParser.java:396)
        at com.velocitypowered.proxy.ProxyOptions.<init>(ProxyOptions.java:25)
        at com.velocitypowered.proxy.Velocity.main(Velocity.java:39)
Rebooting! Press CTRL-C to stop process
Exception in thread "main" joptsimple.UnrecognizedOptionException: o is not a recognized option
        at joptsimple.OptionException.unrecognizedOption(OptionException.java:108)
        at joptsimple.OptionParser.validateOptionCharacters(OptionParser.java:633)
        at joptsimple.OptionParser.handleShortOptionCluster(OptionParser.java:528)
        at joptsimple.OptionParser.handleShortOptionToken(OptionParser.java:523)
        at joptsimple.OptionParserState$2.handleArgument(OptionParserState.java:59)
        at joptsimple.OptionParser.parse(OptionParser.java:396)
        at com.velocitypowered.proxy.ProxyOptions.<init>(ProxyOptions.java:25)
        at com.velocitypowered.proxy.Velocity.main(Velocity.java:39)
Rebooting! Press CTRL-C to stop process
Exception in thread "main" joptsimple.UnrecognizedOptionException: o is not a recognized option
        at joptsimple.OptionException.unrecognizedOption(OptionException.java:108)
        at joptsimple.OptionParser.validateOptionCharacters(OptionParser.java:633)
        at joptsimple.OptionParser.handleShortOptionCluster(OptionParser.java:528)
        at joptsimple.OptionParser.handleShortOptionToken(OptionParser.java:523)
        at joptsimple.OptionParserState$2.handleArgument(OptionParserState.java:59)
        at joptsimple.OptionParser.parse(OptionParser.java:396)
        at com.velocitypowered.proxy.ProxyOptions.<init>(ProxyOptions.java:25)
        at com.velocitypowered.proxy.Velocity.main(Velocity.java:39)
Rebooting! Press CTRL-C to stop process