If you have the disk space then try installing the engine debug symbols (it’s in the epic launcher => unreal version => Installation options => Editor Symbols for debugging)
It will give more detailed errors.
RHI error (Render Hardware Interface) would indicate something to do with the graphics card driver most likely
What graphics card are you running? Does it meet Unreal’s minimum requirement specs?
If on laptop make sure you are not launching the editor on the integrated graphics option.