[SHARE] Simple RSI BULL/BEAR strategy

[embezon]

I've a problem using this strat with Gekko. 
Gekko is running on a raspberry pi.

After starting in the logfile is written:
2019-01-13 12:00:53 (INFO): Setting up:
2019-01-13 12:00:53 (INFO): Trading Advisor
2019-01-13 12:00:53 (INFO): Calculate trading advice
2019-01-13 12:00:53 (INFO): Using the strategy: RSI_BULL_BEAR_ADX
2019-01-13 12:00:53 (ERROR): Failed to load indicator PDO
2019-01-13 12:00:53 (INFO): ====================================
2019-01-13 12:00:53 (INFO): Running RSI Bull and Bear + ADX
2019-01-13 12:00:53 (INFO): ====================================
2019-01-13 12:00:53 (INFO): Make sure your warmup period matches SMA_long and that Gekko downloads data if needed
2019-01-13 12:00:53 (INFO):

But in gekko/strategies/indicators the file PDO.js exists (copied from https://github.com/Gab0/gekko-extra-indicators)

What's the cause and how to resolve this?

Thanks! (and have a very nice trading day......)
Marco