콘솔 오류메시지

사이트 콘솔을 열면 계속해서 아래와같은 로그가 쌓이고있습니다.

해당 메세지의 index source를 보면

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이런식으로 나오네요.

브라우저도 계속 느려지는것 같은데 어딜 손봐야할까요?