07.08 08:41:09 [Server] Server thread/WARN Tried to add entity Pig with duplicate UUID 04d81de3-3f21-4728-89fa-046abd3b30e4
07.08 08:41:09 [Server] Server thread/WARN Tried to add entity Pig with duplicate UUID e59ce1ee-a894-40d3-abf6-6969ab1142e1
07.08 08:41:09 [Server] Server thread/WARN Tried to add entity Pig with duplicate UUID 92227cf6-2528-40e7-aae7-c9943f48ed2a
07.08 08:41:09 [Server] Server thread/WARN Tried to add entity Sheep with duplicate UUID b00aa799-cd85-4060-8b9d-5d4cc989da63
07.08 08:41:09 [Server] Server thread/WARN Tried to add entity Sheep with duplicate UUID 724b59dc-6916-45b4-a907-61f09d4b2b2f
07.08 08:41:09 [Server] Server thread/WARN Tried to add entity Sheep with duplicate UUID c4a6c443-b03f-4114-af94-102fa945246d
07.08 08:41:09 [Server] Server thread/WARN Tried to add entity Sheep with duplicate UUID 0f29a360-6c5a-4f57-90bc-a7a73b1d921d
07.08 08:41:09 [Server] Server thread/WARN Tried to add entity Item with duplicate UUID 4a2bc156-9b10-4491-9019-1237726ddf96
07.08 08:41:09 [Server] Server thread/WARN Tried to add entity Item with duplicate UUID 7bcb7c6e-a22e-4cf9-9573-424e90d709ba
07.08 08:41:09 [Server] Server thread/WARN Tried to add entity Item with duplicate UUID f196edd3-35da-4b1d-a7b9-581e477f2044
07.08 08:41:09 [Server] Server thread/WARN Tried to add entity Item with duplicate UUID fa54aaec-e84d-491e-9b7b-170a4b8b209c
07.08 08:41:09 [Server] Server thread/WARN Tried to add entity Item with duplicate UUID d42981c2-47dc-406a-84cb-aa8a42472f0f
07.08 08:40:24 [Server] Server thread/WARN Tried to add entity Item with duplicate UUID b2c10cc9-cde1-4804-814e-70c7cabb97a0

The Entity's like villagers animals trapped inside fences, Minecarts, Item Frames And armor stands should not Despair after reloading the chunks.

After reloading New chunks these Entity's Despair
This Bug can sometimes cause a lot of lag and sometimes crashes the server.

This Error happens every time i try reloading the chunks that the entity's are in. This error is in my server console witch is hosted by MCProHosting and they clearly have told me this error has nothing to do with their Server.

P.S. This Bug might already be in the processes of being fixed but I haven't seen it anywhere.