The answer to 'light fixture sparking' is that a sparking light fixture is a serious electrical issue that requires immediate attention. Potential causes include a loose connection, a short circuit, or a problem with the wiring. Symptoms may include flickering, buzzing, or sparks coming from the fixture.
It's important to address a sparking light fixture right away, as it poses a fire hazard. If you notice any sparking, turn off the power to the fixture at the circuit breaker and do not attempt to use the light. Calling a licensed electrician is strongly recommended, as they can safely diagnose and repair the issue. Attempting DIY repairs on a sparking fixture can be extremely dangerous and should be avoided.