Mists of Pandaria 5.4.8 crash

Today, I installed 5.4.8 for my Mists of Pandaria 5.4.2, however with the update, game has been crashing in 5-10 minutes. How can I solve this issue and if this doesnt work how can I turn back to former version

Picture of crash report:
https://image.prntscr.com/image/MkGg...jOwu7vG1_w.png

Sincerely, Xenosai

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updated
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While testing to play game to find out issue details more, I find out the issue only occurs within the region where my character stays in the game meanwhile my game were updating. Update may have caused chunk loading issue, maybe glitch, which causes crash in 5-10 minutes