error using this layer with spacemacs.

[shelper]

Warning (initialization): An error occurred while loading ‘c:/Users/MPNV38/.emacs.d/init.el’:

Symbol's function definition is void: spacemacs|defvar-company-backends

To ensure normal operation, you should investigate and remove the cause of the error in your initialization file. Start Emacs with the ‘--debug-init’ option to view a complete error backtrace.

[wlemuel]

Maybe you're using develop mode of spacemacs. You can use https://github.com/wlemuel/elpy-layer for instead