Mobile Money and Financial Inclusion in Tanzania Challenge
Cash and prizes worth $2,250 USD
Who is most likely to use mobile money? And who is most likely to use other financial services?
26 March–30 June 2019 23:59
486 data scientists enrolled, 163 on the leaderboard
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,