Android Question http server and Net lib together?

What is the error you got?

in serverservice of the httpserver this compile error comes up when i the net library activate
B4A version: 6.50
Parsing code. (0.10s)
Compiling code. Error
Error compiling program.
Error description: Current declaration does not match previous one.
Previous: {Type=files,Rank=0, RemoteObject=False}
Current: {Type=List,Rank=0, RemoteObject=True}
Occurred on line: 84
Dim all, files, folders As List
Word: ,

line 84 is this:
without the Net lib it compiles without any error

sorry found it already. I got a module named files, this name interfered with the declaration of files as list