Booster pump killing main pump

So today I went outside and noticed my main pump was off, I typically run it 24/7 so this was strange. I reset the breaker and it came back on. I tried to use my booster pump but when I flipped the switch my main pump went off and the booster sounded weird. I shut the booster off and the main pump was dead again. Any ideas on what's going on?
 
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