Failed to produce item when I try to compile UE4

Development Platform & Builds
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1

Hi, I’m try to compile UE4.21 on Ubuntu 18.04 but I got next in Log.txt:

Log.WriteException: ERROR: UBT ERROR: Failed to produce item: /home/wcobalt/Files/InstalledPrograms/UnrealEngine/Engine/Plugins/Media/WebMMedia/Binaries/Linux/libUE4Editor-WebMMedia.so
Log.WriteException:        (see ../Programs/UnrealBuildTool/Log.txt for full exception trace)
Log.WriteException: 
Log.WriteException: BuildException: UBT ERROR: Failed to produce item: /home/wcobalt/Files/InstalledPrograms/UnrealEngine/Engine/Plugins/Media/WebMMedia/Binaries/Linux/libUE4Editor-WebMMedia.so
Log.WriteException:   at UnrealBuildTool.ActionGraph.ExecuteActions (UnrealBuildTool.BuildConfiguration BuildConfiguration, System.Collections.Generic.List`1 ActionsToExecute, System.String& ExecutorName, System.String TargetInfoForTelemetry, EHotReload HotReload) [0x00000] in <filename unknown>:0 
Log.WriteException:   at UnrealBuildTool.UnrealBuildTool.RunUBT (UnrealBuildTool.BuildConfiguration BuildConfiguration, System.String[] Arguments, Tools.DotNETCommon.FileReference ProjectFile, Boolean bCatchExceptions) [0x00000] in <filename unknown>:0

How can I fix it?

Thank you in advance.

P.S. Sorry for my english

2

Hi, 4.21 is not released yet so there might be issues happening with it. If I were you I would go for 4.20 branch which carries the required toolchain with it.