antd-design+ts中使用PageHeader时avatar报错

[ipingping]

新手在使用antd-design+ts的过程中PageHeader的avatar无法使用具体

<PageHeader
        title="个人应用"
        subTitle="This is a subtitle"
        extra={[
          <Button key="3">Operation</Button>,
          <Button key="2">Operation</Button>,
          <Button key="1" type="primary">
            Primary
          </Button>,
          <DropdownMenu key="more" />,
        ]}
        avatar={{ src: 'https://avatars1.githubusercontent.com/u/8186664?s=460&v=4' }}
        ></PageHeader>