Import Log for OBIS environmental data records

• Started: November 06, 2020 18:23
• Completed: No.
• Failed: 18:23:22.000
• Status: undefined method `+' for nil:NilClass

Events (most recent first):

• 18:23:22.000 (errors) undefined method `+' for nil:NilClass
• 18:23:22.000 (errors) gem:activesupport-5.2.4.3/lib/active_support/dependencies.rb:257:in `load_dependency'
• 18:23:22.000 (errors) gem:activesupport-5.2.4.3/lib/active_support/dependencies.rb:291:in `require'
• 18:23:22.000 (errors) bin/rails:4:in `<main>'