Why is my phone stuck on Emui system optimization screen?

So i have a Huawei P8 Lite, and Emui asked for an update i waited for like a wee or smth but yeah i clicked update today and now my phone is stuck at the Emui screen 100% and it says System optimizing for like an hour now, tried booting the phone like 3 times, boots up to the same screen again, what should i do?

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