Error with show-method: Unhandled exception in YARD::Handlers::C::MixinHandler

[becker1701]

While in a pry console session, #show-method is throwing an unhandled exception in in YARD::Handlers::C::MixinHandler.

-- This is the pry console session:
The command is run at line 21 of the following Gist:
Gist of full stack trace

Pry: 0.10.4
Ruby: 2.3.1
RVM: 1.29.0
pg 0.19.0
yard: 0.9.8

[davidalejandroaguilar]

I got the same error myself while doing:

result = db.exec('SELECT * FROM films;')
show-method result.values
# Error

Ruby 2.3.1
Pry 0.10.4
PG: 0.20.0 x86-mingw32
Yard: 0.9.9