I tried several times to include a custom font to the web​ module.
This is what I have done to add the custom font

in the dir /addons_price/web/static/fonts​ there is an already existed file fonts.scss​ which is responsible for including the already-existed font in the /fonts​​ dir (e.g google, lato, sign, etc...).

Now in the dir /fonts​ (where the already-existed fonts folders are) I tried to add a new font dir called Noto_Sans_Arabic​ and the structure of this font folder is like this: 

Noto_Sans_Arabic/

  /static​

​ ​NotoSansArabic_Condensed-Black.ttf
​ ​NotoSansArabic_Condensed-Bold.ttf
​ ​etc...

Now let's go to the including step after we added the font dir /Noto_Sans_Arabic​ to /addons_price/web/static/fonts​

1- go to the fonts.scss​ file because it already contains the code to include the already existed fonts, so I added this code to it: 
@font-face {
​font-family: 'Noto_Sans_Arabic';

​src:​url('web/static/fonts/Noto_Sans_Arabic/static/NotoSansArabic_Condensed-Black.ttf') format('truetype'),
​url('web/static/fonts/Noto_Sans_Arabic/static/NotoSansArabic_Condensed-Bold.ttf') format('truetype');    font-weight: normal;    font-style: normal;    }        

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but it produces this error in the console (I even restarted the server): 
GET http://localhost:8068/web/static/fonts/Noto_Sans_Arabic/static/NotoSansArabic-Black.ttf 404 (NOT FOUND)

GET http://localhost:8068/web/static/fonts/Noto_Sans_Arabic/static/NotoSansArabic-Bold.ttf 404 (NOT FOUND)​

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I tried to add the font to the __manifest__.py​ file but it didn't work also or maybe I didn't include it there in the right way.

Please If anyone knows how to solve this help me