Rbe not require other rb class

hi guys, i have converted my rb files in rbe with the official sketchup scrambler, but when i require the converted class this happen LoadError: cannot load such file – progressbar, the same thing happen if i put the extension at the end of class
please help me

Sketchup.require(path)
Module: Sketchup — SketchUp Ruby API Documentation
This method requires [i.e. loads if needed] the specified file - either RBE, RBS or RB.
The Ruby require(path) only works on RB files.

Ah ok thank you TIG , there is also written in the extension signature , sorry, my mistake, thank you for your time