I am getting an error in UE 4.19.0 it was also in 4.18.3. Hexadecimal value0x00 is a invalid character line 1 position 1.

Answer 1

0x00 is null in hexadecimal and it's invalid character in xml

Answer 2

So how do you change it? I am very unexperienced.

Answer 3

Also what does all that mean and how is it connected to Unreal Engine 4? Sorry if I'm asking basic questions.

Answer 4

I found out that the cause was this file:
My Documents\Unreal Engine\UnrealBuildTool\BuildConfiguration.xml

Deleting it was the solution.

There are two other potential locations of the buildConfiguration.xml
I'd advise checking all of them to see if any of them are empty.