![Unreal Build Tool Error: ubt> ERROR: Unhandled exception: System.ArgumentNullException: Value cannot be null - C++ - Epic Developer Community Forums Unreal Build Tool Error: ubt> ERROR: Unhandled exception: System.ArgumentNullException: Value cannot be null - C++ - Epic Developer Community Forums](https://d3kjluh73b9h9o.cloudfront.net/original/4X/1/e/b/1ebdb27c40b6d3acaee5c6646dfbbe255022cabd.png)
Unreal Build Tool Error: ubt> ERROR: Unhandled exception: System.ArgumentNullException: Value cannot be null - C++ - Epic Developer Community Forums
![Changing BuildConfiguration(.xml) in 4.16 - Programming & Scripting - Epic Developer Community Forums Changing BuildConfiguration(.xml) in 4.16 - Programming & Scripting - Epic Developer Community Forums](https://d3kjluh73b9h9o.cloudfront.net/original/4X/f/0/0/f00edcfe86f2e9ecc61d0e9ebd236538d11082c0.png)
Changing BuildConfiguration(.xml) in 4.16 - Programming & Scripting - Epic Developer Community Forums
![UnrealBuildTool failed with exit code 0x00000006 - 简体中文(Simplified Chinese) - Epic Developer Community Forums UnrealBuildTool failed with exit code 0x00000006 - 简体中文(Simplified Chinese) - Epic Developer Community Forums](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/9/0/390f96ee1e428846b6b08ea59a0b39c4f8e7ad98.png)
UnrealBuildTool failed with exit code 0x00000006 - 简体中文(Simplified Chinese) - Epic Developer Community Forums
![Rider shows lots of errors when opening an Unreal 5 project (but it sill builds) - C++ - Epic Developer Community Forums Rider shows lots of errors when opening an Unreal 5 project (but it sill builds) - C++ - Epic Developer Community Forums](https://i.stack.imgur.com/wMa3W.png)