Pilgrims! We've just introduced Hotfix 1.11.3, which resolves the following issues:

• Implemented a proper fix for the missing items in the stash.
• Melee weapons will now properly appear as blueprints, avaliable to be crafted at craftmasters. Other items (like paragliders, outfits) will remain as they were.

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https://store.steampowered.com/app/534380/Dying_Light_2_Stay_Human/