My allay doesn't follow me

My allay doesn't follow me. I don't know if it's because I drank an invisibility potion or because I died in the Nether. It doesn't follow me and the leads don't do anything to it (I can tie it up, it looks like it's tied up, but the lead doesn't do anything to it and breaks it). It picks up objects and brings them to me, but it doesn't follow me.