Read Json Data and put it into Variables

just remove these stupid if else from the code and read JSON as you did it before 4.1+. These three lines of code made a lot of problems )))

indexOf('application/json' > -1) ONLY if the file extension is .json. but it can be .gltf or any other extension or no extension at all))) In fact, it was a bad idea to add this feature. There is a good puzzle read JSON from and it works good with all files…

https://www.soft8soft.com/topic/verge3d-4-1-1-maintenance-update/page/2/#post-55519

jakob wrote:

but somehow the json file could not be read – the variable remained empty

read JSON as you did it before 4.1+ means this set of puzzles: load data from a file -> read JSON from loaded data

see no problems with your json file…