fetch res.json() SyntaxError: Unexpected token  in JSON at position 0

[YanYuanFE]

React Native version: 0.60.5 and 0.59.3

Steps To Reproduce

1. use fetch report error but worked on browser

Describe what you expected to happen:
res.json() work.

Snack, code example, screenshot, or link to a repository:

fetch('http://minisite.medtoday.com.cn/cycle/v-tipr-physician/getcolumnbycompanyid.php?company_id=1&parent_id=0').then(res => res.json())
    .then(res => {
      console.log(res);
    })

[YanYuanFE]

[YanYuanFE]

res.text() can work, but JSON.parse() for after res.text(), also not work.

[JKCooper2]

Have you confirmed the response status is 200? Try using the code from https://developers.google.com/web/updates/2015/03/introduction-to-fetch#fetch and see if that prints it out

[YanYuanFE]

response status is 200, but response header not status 200, is this reason?

[JKCooper2]

Not sure, however i believe its an issue with fetch you're having, not an issue with react-native

[ravirajn22]

This error is not related to fetch or react-native i think. Print the raw body text from the response and check if you can parse it to json in chrome dev tools. Most probably the issue is due to response body not in proper format to parse to json.

[stale]

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require the community's attention? This issue may be closed if no further activity occurs. You may also label this issue as a "Discussion" or add it to the "Backlog" and I will leave it open. Thank you for your contributions.

[stale]

Closing this issue after a prolonged period of inactivity. If this issue is still present in the latest release, please feel free to create a new issue with up-to-date information.