Sparks and Horn while Jump Starting

I left my car for a couple of weeks while gone, it is a 2018 Honda Civic EX-T. When I came back and tried to get in all the lights were out and nothing on the dash was lighting up so I figure the battery was dead and tried to jump start my car. However, when I go to jump start my car, after I attach the first three leads and I go to attach my final one at the ground spot on my car, it sparks immediately and the front lights go off and the horn sounds. Because of this I haven’t fully attached the final lead and tried jumping my car yet. I am confused why it is sparking and why the horns are going off, should I just leave it attached after the initial horn sound and continue to jump the car? I don’t understand what else I am doing wrong I am attaching the cables in the right order and I saw in other posts that the horn is going off because the car still thinks it is locked but I didn’t see any posts addressing the sparks. Any help would be greatly appreciated.

Thank You.