each eye while your down there.
go push the wall button and see if it works or see if the both little lights are on.
try wiping the bottom of the door with a broom sometime there are spider webs that are on the bottom of door and as the door goes down the spider web or leaf stuck to the spider web will makes the door go up.
check the wire to see if there is pinched or broken wire.
the eyes may be bad don’t be lazy replace both eye’s even if that light is on. 