No implicit conversion of nil into String while creating instance of Prometheus::Client::MmapedValue defaultig to SimpleValue
Thanks for forking this gem to try to fix the issues with running it under pre-forking web servers.
I often see errors like the following when using this gem:
INFO -- : error no implicit conversion of nil into String while creating instance of Prometheus::Client::MmapedValue defaultig to SimpleValue
Any reason why a simple Rails app using Puma or Unicorn would see this repeatedly? What is coming back nil
?