迁移报错

db/migrate/20190705085829_add_sec_key_to_outputs.rb

@@ -1,6 +1,6 @@
 class AddSecKeyToOutputs < ActiveRecord::Migration[5.2]
   def change
-    add_column :outputs, :sec_key, :string
+    #add_column :outputs, :sec_key, :string
     add_column :outputs, :ts_mem, :float
     add_column :outputs, :ts_time, :float
   end