exist ?

[bialystok]

/home/USER/gems/gems/tensor_stream-1.0.9/lib/tensor_stream/ops.rb:5:in <module:Ops>': undefined method exists?' for File:Class (NoMethodError)

if File.exists?(File.join(__dir__, 'generated_stub', 'ops.rb'))
       ^^^^^^^^

Did you mean? exist?
from /home/USER/gems/gems/tensor_stream-1.0.9/lib/tensor_stream/ops.rb:4:in `module:TensorStream'