swiper结合上拉加载问题

swiper使用onReachBottom,每次上拉加载前要先回到顶部再下拉才会加载.  

另外 会报一个错误:

webviewScriptError

null is not an object (evaluating ‘this._dom.destory’)

value@https://servicewechat.com/wx2df78b3efbc01055/0/page-frame.html:26:20855

value@https://servicewechat.com/wx2df78b3efbc01055/0/page-frame.html:26:24141

https://servicewechat.com/wx2df78b3efbc01055/0/page-frame.html:26:4012

如何解决??提问