-=Testa=-

Just double click on the .jar (forge-1.15.2-31.1.74.jar) I tried with .bat and some options but same results

well this error occurs but the server is still running.

Hello, When starting the java file, the server crashed. Java version (build 1.8.0_251-b08) Any idea? Thank you [05mai2020 15:43:56.334] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Initialized transformers for transformation service fml [05mai2020 15:43:56.343] [main/INFO] [cpw.mods.modlauncher.LaunchServiceHandler/MODLAUNCHER]: Launching target 'fmlserver' with arguments [--gameDir, ., -o, true, nogui] [05mai2020 15:43:57.142] [main/FATAL] [net.minecraft.server.MinecraftServer/]: Failed to start the minecraft server joptsimple.UnrecognizedOptionException: o is not a recognized option at joptsimple.OptionException.unrecognizedOption(OptionException.java:108) ~[jopt-simple-5.0.4.jar:?] at joptsimple.OptionParser.validateOptionCharacters(OptionParser.java:633) ~[jopt-simple-5.0.4.jar:?] at joptsimple.OptionParser.handleShortOptionCluster(OptionParser.java:528) ~[jopt-simple-5.0.4.jar:?] at joptsimple.OptionParser.handleShortOptionToken(OptionParser.java:523) ~[jopt-simple-5.0.4.jar:?] at joptsimple.OptionParserState$2.handleArgument(OptionParserState.java:59) ~[jopt-simple-5.0.4.jar:?] at joptsimple.OptionParser.parse(OptionParser.java:396) ~[jopt-simple-5.0.4.jar:?] at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:908) ~[?:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_251] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_251] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_251] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_251] at net.minecraftforge.fml.loading.FMLServerLaunchProvider.lambda$launchService$0(FMLServerLaunchProvider.java:51) ~[forge-1.15.2-31.1.74.jar:31.1] at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-5.1.0.jar:?] at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-5.1.0.jar:?] at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-5.1.0.jar:?] at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-5.1.0.jar:?] at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-5.1.0.jar:?] at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63) [forge-1.15.2-31.1.74.jar:?] at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60) [forge-1.15.2-31.1.74.jar:?] at net.minecraftforge.server.ServerMain.main(ServerMain.java:57) [forge-1.15.2-31.1.74.jar:?]