Element 'context:include-filter' must have no character or element information item [children], ....

cvc-complex-type.2.1: Element 'context:include-filter' must have no character or element information item [children], because the type's content type is empty.

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问题原因：通常从网上复制代码，可能会出现字符编码问题。

    解决方式：对比着复制的代码自己手动输入一遍。