[Help uploading world]

I uploaded the world successfully, but when I do /worlds and click on it, it says world does not exist

[Why does my server keep crashing]

sorry the plugin was quickshop reremake, not shopchest

[Why does my server keep crashing]

My server has been running smoothly and without issues up until this point. I installed the shopchest plugin, and every time I try to make a chest shop, the server crashes, and when I log back on, the chest shop is gone. Please help