springboot内置jackson处理器配置处理单对象转list报错

这两天做springboot升级的时候遇见一个问题,报错如下(Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.util.ArrayList` out of START_OBJECT token ),根据异常栈找到报错代码处,这个对

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