Video here: 

https://youtube.com/shorts/MflSyEivf0U?si=zdzHnAsJ4_X-hphf

This is my fourth leak in two weeks. I've managed to fix the other three, but I don't even know where to begin with this. It's dripping over the corner from the grey tank, seemingly where the sink drain hose would enter... but I have no idea how things are set up on the tank.

Please help! 
 

Thank you!