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Answers and rating deltas for

I am getting error undefined method `to_sym' for nil:NilClass in Rails for updating image?

Author Votes Δ
Буянбат Чойжилсүрэн 0 +0.03
amnsan 0 -0.05
Буянбат Чойжилсүрэн 0 +0.03
Last visited: Feb 4, 2018, 2:20:22 PM