'Undocumented value 2156' assigned to field garmin_product

[Abasz]

Hi, I am trying to alter a fit file activity recorded with an FR630. I would like to add an event (recovery_hr). Currently I tried to read the data and immediately (without updating) write back to a new file but I receive the following error.

Thanks

Unknown value 'Undocumented value 2156' assigned to field garmin_product
Traceback (most recent call last):
4: from test.rb:57:in <main>' 3: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/fit4ruby-3.3.0/lib/fit4ruby.rb:22:in write'
2: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/fit4ruby-3.3.0/lib/fit4ruby/FitFile.rb:102:in write' 1: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/fit4ruby-3.3.0/lib/fit4ruby/Activity.rb:296:in write'
C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/fit4ruby-3.3.0/lib/fit4ruby/Activity.rb:296:in `sort': comparison of Fit4Ruby::PhysiologicalMetrics with Fit4Ruby::Lap failed (ArgumentError)