Water on Floor in front of refrigerator. Help finding leak

Water on floor in front of refrigerator. No water inside either compartment. Surfaces wet under drain pan and on freezer side of water filter housing. How can I tell where leak is coming from? If I remove water filter housing will refrigerator and ice machine still work? If water filter housing is the issue, will it leak still be present if I remove it? Looking for diagnostic steps…

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