A bug was recently discovered in Monster Hunter World that could crash the game if the player has more than 200 Decorations.
In Monster Hunter World, Decorations are jewels you slot into weapons and armour to grant them special skills, or increase your level with certain skills.
They are a very big component of the end-game in Monster Hunter, but if you happen to have more than 200 of them in your Item Box, your game is going to crash. Though it's rare that anybody but the most dedicated would have that many Decorations, it's still an issue.
Capcom Japan, and Capcom Asia have both confirmed on Friday that they're aware of the issue. The developer is working on an update, but in the meantime, you may want to keep the number of Decorations in your Item Box below 200 to avoid running into this problem.
— モンスターハンター：ワールド公式 (@MH_official_JP) February 23, 2018
Capcom's Western channels have yet to post an update about this, but it's not likely to be different.
If you've not yet reached a point in the game where you're swimming in end-game rewards, consider giving our Monster Hunter World guide a look. You'll find more than just guides for specific weapons and monsters, such as tips for beginners and a few ideas about how to master the end-game.