World not loading

Please don't mark issues as private unless they contain security issues, exploits or personal info (ip, username, real name, e-mail)

Do you know what might be the problem

I really enjoy the game so I want to get it working soon

Please attach the log file

where would I find the log file

Also when I create a new world it will not load properly either
Thank you

Could the problem be associated with my internet?

1. launcher profile->launcher visibility-> keep launcher open
2. play the game
3. load one of those non loading worlds
4. go to the launcher (should be kept open)
5. provide the output of the tab with your username in it here

where do you find the launcher profile
sorry

1. start the launcher, but not the game
2. bottom left

Completely ignored arguments: [--nativeLauncherVersion, 301]
[12:29:15] [Client thread/INFO]: Setting user: Goldenrat17
[12:29:15] [Client thread/INFO]: (Session ID is <censored>)
[12:29:27] [Client thread/INFO]: LWJGL Version: 2.9.4
[12:29:32] [Client thread/INFO]: Reloading ResourceManager: Default
[12:29:37] [Sound Library Loader/INFO]: Starting up SoundSystem...
[12:29:38] [Thread-5/INFO]: Initializing LWJGL OpenAL
[12:29:38] [Thread-5/INFO]: (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
[12:29:51] [Client thread/INFO]: Created: 1024x512 textures-atlas
[12:30:02] [Thread-5/INFO]: OpenAL initialized.
[12:30:02] [Sound Library Loader/INFO]: Sound engine started
[12:30:27] [Server thread/INFO]: Starting integrated minecraft server version 1.9
[12:30:27] [Server thread/INFO]: Generating keypair
[12:30:31] [Server thread/INFO]: Preparing start region for level 0
[12:30:34] [Server thread/INFO]: Preparing spawn area: 0%
[12:30:35] [Server thread/INFO]: Preparing spawn area: 3%
[12:30:36] [Server thread/INFO]: Preparing spawn area: 13%
[12:30:36] [Server thread/WARN]: Keeping entity Bat that already exists with UUID 2188ebc6-b3f5-409d-a2c0-70f3501cc36e
[12:30:37] [Server thread/INFO]: Preparing spawn area: 36%
[12:30:37] [Server thread/WARN]: Keeping entity Skeleton that already exists with UUID 39adbb7e-f071-4d8c-a133-04aa64cc6bf9
[12:30:37] [Server thread/WARN]: Keeping entity Bat that already exists with UUID 5424e919-02e8-4c95-89a0-3e7b41394de3
[12:30:38] [Server thread/INFO]: Preparing spawn area: 59%
[12:30:39] [Server thread/INFO]: Preparing spawn area: 72%
[12:30:40] [Server thread/INFO]: Preparing spawn area: 89%
[12:30:40] [Server thread/INFO]: Changing view distance to 12, from 10
[12:30:47] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 4837ms behind, skipping 96 tick(s)
[12:30:47] [Server thread/INFO]: Goldenrat17[local:E:bd06a855] logged in with entity id 137 at (86.03128375826903, 74.99365479165392, 431.00496097208674)
[12:30:47] [Server thread/INFO]: Goldenrat17 joined the game
[12:30:48] [Server thread/WARN]: Keeping entity Sheep that already exists with UUID c4b67d81-0838-4c6a-a64c-f2d25dda0121
[12:30:50] [Server thread/WARN]: Keeping entity Cow that already exists with UUID 1cbbfd2b-125b-4faf-a93d-ebd188394070
[12:30:50] [Server thread/WARN]: Keeping entity Sheep that already exists with UUID 3272acc3-4be3-4146-af5a-e069da14d712
[12:30:52] [Server thread/WARN]: Keeping entity Pig that already exists with UUID cf269048-4b41-4112-b595-10e486b193e0
[12:31:53] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 46071ms behind, skipping 921 tick(s)
[12:31:55] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2088ms behind, skipping 41 tick(s)
[12:32:14] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 5233ms behind, skipping 104 tick(s)
[12:32:59] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 22107ms behind, skipping 442 tick(s)
[12:33:02] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2741ms behind, skipping 54 tick(s)

could you also make a screenshot of the screen you get when loading the same world?

Not sure how to insert it here took screenshot though

in the world parts have been cut out and boimes are in wrong places

top of the page, attach files

sounds like MC-62958

ok i will update the drive then

your world got corrupted, it's such an old world that it regenerates the corrupted chunks with newer biome settings, causing chunks to look out of place

this is something you can't fix anymore

closest issue I could find: MC-4001

alright thank you so much , sad though

found the real ticket: MC-2548