Question: I downloaded pretrained word vector file (.bin) from facebook (<https://fasttext.cc/docs/en/crawl-vectors.html>)
However, when I tried to use this model it happens to make error.

```
from gensim.models import FastText
fasttext_model = FastText.load_fasttext_format('cc.ko.300.bin', encoding='utf8')

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xed in position 0: invalid continuation byte

```

But weird thing is that it operates well when I use old version bin file (<https://fasttext.cc/docs/en/pretrained-vectors.html>)

What is wrong with these files?? And how can I fix it??

And I must use bin file because I need all n-grams to prevent OOV. So, solutions like 'use .vec file' couldn't be any help.

Thank you so much :)

Answer: 
Make sure you're using the latest (3.7.1) version of gensim; there have been recent fixes & improvements to `load_fasttext_model()`. 

Also, double-check your download of `cc.ko.300.bin`, to be sure it hasn't bee corrupted or truncated. 

If neither of these help, try enabling logging at the INFO level, try the load again, and share the full output and error stack inside your question to give more hints about where things are going wrong.
It turned out that FB Koean fasttext model has some weird unicodes and gensim will update this problem.

<https://github.com/RaRe-Technologies/gensim/issues/2402>