Hi, I can't open the Traveler's Backpack inventory with any keybindings assigned to it in the controls menu. Only way to get it off is by /kill @s if it's on the player since the only way to take it off normally is in the backpack's inventory which isn't possible to access at all by any means necessary...

P.s. Even if I reset the keybinding to its default then try to access its inventory nothing happens and that the default keybinding conflicts with another mod that I'm playing with uses the same keybinding...

Which version are you using?

I've just updated it to the latest and I'm gonna test it to see if any keybindings works but if not then ya know what to do, do ya? (Btw sorry for the late response)

Just found this in my latest crash on start up during the mod loading process on 1.16.4 forge 35.1.37:

[18Jan2021 03:45:25.764] [Worker-Main7/ERROR] [net.minecraftforge.fml.javafmlmod.FMLModContainer/]: Exception caught during firing event: Cannot register a capability implementation multiple times : com.tiviacz.travelersbackpack.capability.ITravelersBackpack

Index: 1
Listeners:
0: NORMAL
1: net.minecraftforge.eventbus.EventBus$$Lambda$2929/1280363901@3c0d2032
java.lang.IllegalArgumentException: Cannot register a capability implementation multiple times : com.tiviacz.travelersbackpack.capability.ITravelersBackpack
at net.minecraftforge.common.capabilities.CapabilityManager.register(CapabilityManager.java:72)
at com.tiviacz.travelersbackpack.capability.TravelersBackpackCapability.register(TravelersBackpackCapability.java:25)
at com.tiviacz.travelersbackpack.TravelersBackpack.setup(TravelersBackpack.java:68)
at net.minecraftforge.eventbus.EventBus.doCastFilter(EventBus.java:247)
at net.minecraftforge.eventbus.EventBus.lambda$addListener$11(EventBus.java:239)
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:302)
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:283)
at net.minecraftforge.fml.javafmlmod.FMLModContainer.acceptEvent(FMLModContainer.java:120)
at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$4(ModContainer.java:121)
at java.util.concurrent.CompletableFuture$AsyncRun.run(Unknown Source)
at java.util.concurrent.CompletableFuture$AsyncRun.exec(Unknown Source)
at java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(Unknown Source)
at java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
at java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)

Thank Blame mod for providing this!

OMG... So many duplication errors from nearly half of what's in my mods folder in my latest log file when I tried to load 35.1.37 when everything was fine in 35.1.34 to some extent..... Here, take a look....
latest.log

I may have fixed what was causing the duplication errors which was that I had a resource pack that has mod support and was literally making duplicates of what's already being loaded during the mod loading processes... So I've learned my lesson to never load a resource pack that has mod support or else during mid to late mod loading processes that the game crashes.... Anyways back to the main topic of the issue at hand. DAMN IT.... test world died by the ticking world crash.... Makin a new test world now in forge 35.1.34 since some of my mods seems to not be working beyond 34 anymore but might work for forge 36 for 1.16.5...

Ok, just switched the default keybind from B to L and it's working now but for the last version for Traveler's Backpack for some really odd reason that with any keybindings assigned to the inventory if the item in the mod doesn't work.

So what's the problem now?

Theres no problem now since the current version I'm using apparently fixed it (tested it in a test world to make sure that 5.3.8 has a working keybinding inventory which it does) which may still coexist within 5.3.7 before 5.3.8.

What the issue was in 5.3.7 was that whichever keybindings I had assigned to the Backpack's inventory that I wasn't able to access it's inventory by any means necessary except for killing my character and setting it down on the ground only.

I dont think that anyone else had the same problem as I had so apparently Traveler's Backpack 5.3.7 wasn't working for me at all for the inventory part.

So I'm sorry for wasting your time on this useless report since the problem has been fixed by simply just updating the mod to a new version... You may close this report as you wish, ok?...