Over the last few weeks, my pool light GFCI had been tripping after about 5 minutes of the light being on. Today I replaced the gasket and also confirmed there's no water in the housing. When I tested the light after replacing and securing the gasket, the GFCI is tripping as soon as the switch for the pool light is turned on. If helpful, attached is a picture of the GFCI box — it's the grey one in the middle. So, thoughts on what I should I do next? What other pictures/info would be helpful for figuring out what's going on?