well, you didn’t help it as this path is still 258 characters long. 
Try doing what I’ve suggested
The offending path:
C:/Users//Documents/Unreal Projects///Content/MyContent/Animations/Textures/Environment/textures-objects/C192-052915-002-Marble-Top-Half-Moon-Asian-Style-Hall-Table-225-2-924x784_Sprite.uasset