If your dishwasher produces too much foam, it could be because too much rinse aid is injected into it. Rinse aid is a chemical additive designed to help water sheet off dishes and glassware to prevent spots and streaks. If too much rinse aid is injected, it can cause excess foam to form in the dishwasher, resulting in poor cleaning performance and even damage to the dishwasher.
To fix the issue, try reducing the amount of rinse aid you use by adjusting the settings on your dishwasher or using a smaller amount of rinse aid. If the problem persists, you may need to contact a professional to check the rinse aid injection system and make any necessary repairs.