I checked my intersection, I recreated the curves but there is always the same issue at the same spot. I was not able to track what is causing it. 
 
I made a network but I had a pinching. I'll try to redo it. 
 
Thanks for the support. 
 
 
Edit: I tried to make the shape using network but it doesn't work. I get a funky shape, I have no clue what I am doing wrong. 
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