Fixed_Enteties_1.15_0.6_[Sw].zip is a beta file of the Minecraft resource pack Sandwich's Entity Pixel "Fix", made for Minecraft 1.15-Snapshot, 1.15, 1.15.2, 1.15.1. It was published on January 9, 2022 and is 0.1 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the Sandwich's Entity Pixel "Fix" resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.