Defeating Route 11 Trainer's Pokemon causes Runtime Error

[Former user]

Trainer's name is Picknicker Sejun. Defeated her Dedenne, which caused the game to stop. Experimented with multiple party Pokémon but got the same result every time.

Trainer can be easily skipped, is not an unavoidable battle. Error text as follows: http://i.imgur.com/b0m6DFU.png

A similar bug was encountered in the Sonata City gym, which has already been reported.