Maytag side by side refridgerator. Maytag side by side refridgerator MSB2354DRW is leaking water,

Question

Maytag side by side refridgerator MSB2354DRW is leaking water, related to ice building up on bottom of freezer compartment. Water appears to be dripping out through bottom of door. Water is dripping from inside back wall of fridge compartment, running down and collecting on bottom of freezer compartment. Is there a problem with auto defrost cycle, or a clogged drain?