This means your .zip file doesn't contain the right files. Try the below, and if it's still broken, feel free to contact us on for more help.
Linux
Linux/Manifest_DebugFiles_Linux.txt
Linux/Manifest_NonUFSFiles_Linux.txt
Linux/Manifest_UFSFiles_Linux.txt
Linux/MyProject.sh
Linux/MyProject
Linux/MyProject/Samples
Linux/MyProject/Samples/PixelStreaming
Linux/MyProject/Samples/PixelStreaming/WebServers
Linux/MyProject/Samples/PixelStreaming/WebServers/get_ps_servers.bat
Linux/MyProject/Samples/PixelStreaming/WebServers/get_ps_servers.sh
Linux/MyProject/Content
Linux/MyProject/Content/Paks
Linux/MyProject/Content/Paks/MyProject-Linux.pak
Linux/MyProject/Content/Paks/global.utoc
Linux/MyProject/Content/Paks/MyProject-Linux.ucas
Linux/MyProject/Content/Paks/global.ucas
Linux/MyProject/Content/Paks/MyProject-Linux.utoc
Linux/MyProject/Binaries
Linux/MyProject/Binaries/Linux
Linux/MyProject/Binaries/Linux/MyProject.debug
Linux/MyProject/Binaries/Linux/MyProject
Linux/MyProject/Binaries/Linux/libNvmlWrapper.so
Linux/MyProject/Binaries/Linux/MyProject.sym
Linux/Engine
Linux/Engine/Content
Linux/Engine/Content/SlateDebug
Linux/Engine/Content/SlateDebug/Fonts
Linux/Engine/Content/SlateDebug/Fonts/LastResort.tps
Linux/Engine/Content/SlateDebug/Fonts/LastResort.ttf
Linux/Engine/Extras
Linux/Engine/Extras/GPUDumpViewer
Linux/Engine/Extras/GPUDumpViewer/OpenGPUDumpViewer.bat
Linux/Engine/Extras/GPUDumpViewer/GPUDumpViewer.html
Linux/Engine/Extras/GPUDumpViewer/OpenGPUDumpViewer.sh