Can't Open Inventory

I can't open my inventory, but I can open it once but after that I can't open it again no matter what I do even the chest and the crafting table, I notice it happens when I put the lootbox plugin by david , and also i already added invcrashfix and pmmp devtools, how to fix the problem?

 

Use only high-quality plugins whose can be fond on poggit.

 

it can be because of your connection. Sometimes delays packets. If you cannot open in 1 minute there is a problem.

 

Yes it's more than a minute but still doesn't working, But do you have any idea how to fix it?

 

As you have discovered, it is caused by using por-quality plugins. Look at poggit and try finding plugins equal to those you use right now.

 

@CylekPOG try to remove and add readd PocketMine-MP.phar
Releases: https://github.com/pmmp/PocketMine-MP/releases