Mobile Money and Financial Inclusion in Tanzania Challenge
Cash and prizes worth $2,250 USD
Predict who is more likely to use mobile money or other financial services
529 data scientists enrolled, 163 on the leaderboard
Financial ServicesPredictionStructured
26 March 2019—1 July 2019
Error on Submission
published 27 Jun 2019, 11:57

I am getting this error on submitting 'unknown error: undefined method `+' for nil:NilClass'. What does it mean?

figured it out. had dropped some rows from the test set,