Page rerender making empty document viewer

The document viewer is a child element of a page, when the page loads initially the document viewer is working perfect. Refer the screen shot #1.

The page state modification will trigger the re render cycle, at this time document viewer is becoming empty refer the screen shot # 2.

Screen shot #1 :

Screen Shot #2:

```
const docs = [
{ uri: require('./lorem-ipsum.pdf'), fileType: 'pdf' },
{ uri: require('./loremipsum.pdf'), fileType: 'pdf' },
];


```

Question 2: Is there any way setPageNumber directly and how to know the total number of pages.

Please provide some help or comments.