Gunther not sending rusty key

[[HS] Stetside]

I'm playing with mods and I've already completed 100% of the museum artifacts but Gunther doesn't send the key to access the sewer

-I checked and yes, I completed all the items
-I didn't see the scene with Jas and Vince in the first year, spring (I just don't know why)
-I know I can mark an unseen scene in the Sv file (but I don't know where I can see the event ID)
-Yes, I waited a few days
-I'm in winter

[randead]

If you're on Stardew Valley Expanded, you have to befriend Marlon.

[Queen Droxxanna]

Marlon??? That weird kid who I sometimes see in the museum?? Well now that I know that he has not been in the museum the last few game days.
No wait, Marlon is the guy in the dungeon warriors place. I think I am friends with him.

[Bleep]

marlon is the adventurer's guild one-eyed fellow

[Maya-Neko]

You've to either be at 5 hearts with Marlon on year 1 or at any heart level on year 2 and reached the end of the mines, then you can trigger it by entering the adventurers summit (the wiki says to do it on any day, though i only got it to work in the evening).