This is the error message that I get when compiling ox-ipynb.el using emacs 25.2.1:
In ox-ipynb-export-code-cell:
ox-ipynb.el:107:13:Error: ‘add-to-list’ can’t use lexical var ‘output-cells’;
use ‘push’ or ‘cl-pushnew’
ox-ipynb.el:158:13:Error: ‘add-to-list’ can’t use lexical var ‘output-cells’;
use ‘push’ or ‘cl-pushnew’
ox-ipynb.el:155:13:Error: ‘add-to-list’ can’t use lexical var ‘output-cells’;
use ‘push’ or ‘cl-pushnew’
This is the error message that I get when compiling ox-ipynb.el using emacs 25.2.1: