[dor_indexing_app/production] NoMethodError: undefined method `[]' for nil:NilClass

[drh-stanford]

Backtrace

line 3 of [PROJECT_ROOT]/app/controllers/dor_controller.rb: reindex

View full backtrace and more info at honeybadger.io

[jcoyne]

Here's a minimal reproduction:

obj = Dor.load_instance 'druid:st562rd3260'
 => #<Dor::Item pid: "druid:st562rd3260", admin_policy_object_id: "druid:yn891tj4781">
obj.workflows.to_solr
Traceback (most recent call last):
        1: from (irb):5
NoMethodError (undefined method `[]' for nil:NilClass)

[jcoyne]

> obj.workflows.workflows.count
 => 7
> obj.workflows.workflows[3].workflowId
 => ["dpgImageWF"]
> dpgImageWF = obj.workflows.workflows[3]
 => #<Dor::Workflow::Document:31478820>
> dpgImageWF.processes.count
 => 12
> dpgImageWF.processes[0].state
 => "completed"
 > dpgImageWF.processes[1].state
Traceback (most recent call last):
        1: from (irb):29
NoMethodError (undefined method `[]' for nil:NilClass)
> dpgImageWF.processes[1]
 => #<Dor::Workflow::Process:0x00000000071f8f40 @workflow="dpgImageWF", @repo="dor", @attrs={"name"=>"tracking_db", "sequence"=>2, "status"=>"waiting", "lifecycle"=>nil, "label"=>"Add to DPG tracking database", "batch_limit"=>nil, "error_limit"=>nil, "priority"=>0, "prerequisite"=>["initiate"]}>
 > dpgImageWF.processes[1].state
Traceback (most recent call last):
        1: from (irb):31
NoMethodError (undefined method `[]' for nil:NilClass)