Keep Getting Fetal Error While Selecting Any item on Hot Bar

Keep Getting Fetal Error While Selecting Any item on Hot Bar. Happened this to me and my friend, continuously. Can’t play
Game mode: [Enter game mode here: (Online official | Online private | Single-player)]
Type of issue: [Enter one of the following: Crash | Bug | Performance | Misc]
Server type: [Enter one of the following: PvP | PvE-Conflict | PvE]
Region: [Please enter your server region]


[Describe the bug here]


Please provide a step-by-step process of how the bug can be reproduced. The more details you provide us with the easier it will be for us to find and fix the bug:
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2 posts were merged into an existing topic: PC Patch (03.09.2019) Fatal error