Def leak code 4364 fmi 18

[Zusky407]

I had the code 4364 fmi 18 pop up so i did some searching, and did my diagnostics according to what i found. I found a leak, theres an image attached.
Also took off def injector, found it pretty plugged up. The decomp tube wasn't plugged but the hole where the injector goes was plugged up.


Picture with the yellow circle show how small the hole was before i poked it through. I cleaned it out.
Will get some new clamps and gaskets for the scr tube and try to run it tomorrow to see where the leak is coming from for sure. I will also be replacing the def filter. Any advice is appreciated.