When a player opens a backpack in a replay with Traveler's Backpack mod. The replay crashes with a error code like this:

Connection Lost: Failed to open a screen with advanced data: java.lang.NullPointerException: Cannot invoke "com.tiviacz.travelersbackpack.inventory.BackpackWrapper.tanksVisible()" because "this.wrapper" is null

The whole replay refuse to load after accessing the backpack

I think that's solved now, let me know if it's not