Build or launch in HTML5 fails

Hey,

I have followed the Unreal Tutorial in how to make a HTML5 build.

But when I try to luanch or build I have those errors:

LogPlayLevel: Running: C:\Program Files\Epic Games\UE_4.22\Engine\Binaries\DotNET\UnrealBuildTool.exe TEST HTML5 Development -Project=C:\Users\llim\Desktop\BRP_BYO\BRP_unreal_perforce\TEST.uproject  C:\Users\llim\Desktop\BRP_BYO\BRP_unreal_perforce\TEST.uproject -NoUBTMakefiles  -remoteini="C:\Users\llim\Desktop\BRP_BYO\BRP_unreal_perforce" -skipdeploy -ini:
Game:[/Script/UnrealEd.ProjectPackagingSettings]:BlueprintNativizationMethod=Disabled -Manifest=C:\Users\llim\Desktop\BRP_BYO\BRP_unreal_perforce\Intermediate\Build\Manifest.xml -NoHotReload -log="C:\Users\llim\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.22\UBT-TEST-HTML5-Development.txt"
LogPlayLevel: Error:   ERROR: No target name was specified on the command-line.
LogPlayLevel: Took 0.662s to run UnrealBuildTool.exe, ExitCode=5
LogPlayLevel: Error: ERROR: UnrealBuildTool failed. See log for more details. (C:\Users\llim\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.22\UBT-TEST-HTML5-Development.txt)
LogPlayLevel:        (see C:\Users\llim\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.22\Log.txt for full exception trace)
LogPlayLevel: AutomationTool exiting with ExitCode=5 (5)
LogPlayLevel: Completed Launch On Stage: Build Task, Time: 0.249994
LogPlayLevel: BUILD FAILED
PackagingResults: Error: Launch failed! Unknown Error
LogSlate: Window 'Message Log' being destroyed

I don’t know what to do, someone might know!

Thanks in advance