How would you model this?

 From:  Matadem 1 Mar  (6 of 7) 
11569.6 
Good day.
I am still at it lol
What would be the best way to fix the fillet in the corner?
attached pic and file

Tnx!

EDITED: 1 Mar by MATADEM
Attachments:
Attachmentfixcorner.3dm

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