From [bblfsh logs](https://github.com/bblfsh/bblfshd/issues/298) we got a message of `undefined method 'expression' for nil:NilClass`. Examples of files that triggered this error: ``` lib/irb/src_encoding.rb lib/19/irb/src_encoding.rb lib/ruby/1.9/irb/src_encoding.rb ```
From bblfsh logs we got a message of
undefined method 'expression' for nil:NilClass. Examples of files that triggered this error: