Incorrect line number in backtrace

[HunterMeyer]

I'm having an issue debugging an error. We're getting a stack trace like:

JSON::GeneratorError: source sequence is illegal/malformed utf-8
  from active_support/core_ext/object/json.rb:38:in `to_json'
  from active_support/core_ext/object/json.rb:38:in `to_json'
  from active_support/json/encoding.rb:57:in `to_json'
  from json/common.rb:223:in `generate'
  from json/common.rb:223:in `generate'
  from active_support/json/encoding.rb:102:in `stringify'
  from active_support/json/encoding.rb:35:in `encode'
  from active_support/json/encoding.rb:22:in `encode'
  from active_support/core_ext/object/json.rb:41:in `to_json'
  from jbuilder.rb:251:in `target!'
  from jbuilder/jbuilder_template.rb:81:in `target!'
  from app/views/api/v1/stream/index.json.jbuilder:13:in `_app_views_api_v__stream_index_json_jbuilder__1111274208592270428_47381428682480'
  from action_view/template.rb:159:in `block in render'
  from active_support/notifications.rb:168:in `block in instrument'
  from active_support/notifications/instrumenter.rb:23:in `instrument'
  from active_support/notifications.rb:168:in `instrument'
  from action_view/template.rb:354:in `instrument_render_template'
  from action_view/template.rb:157:in `render'

Notice the trace is reporting the exception on line 13 of our jbuilder file

app/views/api/v1/stream/index.json.jbuilder:13

However, that file only has 11 lines.

1  # frozen_string_literal: true
2
3  json.total @records.size
4
5  json.records @records do |record|
6    json.partial! 'api/v1/records/display', locals: {
7      record_to_display: record,
8      context: @record_context,
9      flagged: false
10   }
11 end

I'm guessing the error is somewhere in the partial we're rendering (which itself renders additional partials). Without an accurate line number there's no way to track it down.

Rails version: 5.2.4.4 JBuilder version: 2.10.0

[duhaime]

I had the same issue, so I stopped the server, stopped spring, then restarted the server and all was well