The tropicalfish.json file and the wandering_trader_trades.json file are in the wrong folder inside the vanilla_1.19.60 folder, which causes the Tropical Fish and Wandering Trader trades fixes made in 1.19.60 to be not applied in-game.

This can be fixed by moving the tropicalfish.json into the spawn_rules folder and the wandering_trader_trades.json into the trading -> economy_trades folder.
How it is supposed to look like: