Hi, the following algo works fine with the existing startdate (2015). However, if we change the start date to say 2010, it has a pandas error "Runtime Error: IndexError : -1 at get_value raise IndexError(key) File "/opt/miniconda3/lib/python3.6/site-packages/pandas/core/series.py" in base.py:line 4750 IndexError : -1"

 

any idea? thanks