What is appening with the audio of this pokemon episode ??

I don't know why, but in this episode of pokemon on youtube (season 3, ep 9), in the french audio available, during the second half of the episode, the same sentence from Brock repeat itself indefinitely. It is very strang…

Here is the link to the episode on youtube : https://www.youtube.com/watch?v=enDB30PCPlw&list=PLRcHmntfmJ8DB8wgMrUZwf3JGkLM17yeL&index=9