The file error_example.ipynb was meant as a demonstration to show a glitch/bug with plotting and downsampling. There are two environment files. One is my environment that I use regularly. The other is a brand new enviroment with just backtesting.py and scikit-optimize installed.
Both environments cause the same error.
backtesting_exit_strategies.ipynb is a notebook for working with losing positions and algorithmically solving for a position sizing approach to average down into losing trades. It is a WIP.