I have a KiCAd project which while zipped works perfectly with OSF Park to generate a board; 8 files are compressed.
Trying the same compressed file with PCBS.IO, I received an error message saying the the Board outline file is missing.
However this file is well present (Cuts.gbr).
The file type is correct and is one of the accepted ones of PCBS.IO, I did renamed it with several other possible types without success. Even simplified the files to be G.x.gbr (typically G.cuts.gbr) doesn’t work.
However the site seems only accept Eagle files, is it possible that there is a difference between the KiCad file and the Eagle one regarding the board? .