No 'Access-Control-Allow-Origin' header is present on the requested resource

[ghost]

I am querying some data using the JS SDK. It has been working for me however today when I run it again I get no data returned but the following in console:
XMLHttpRequest cannot load https://api.parse.com/1/classes/MyClass. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://192.168.0.108:8100' is therefore not allowed access. The response had HTTP status code 502.

But I have changed nothing in my code or on the Parse core...

[JacobCorlett]

Same problem. slow queries 9/10 followed by

XMLHttpRequest cannot load https://api.parse.com/1/classes/tickets. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://www.mysite.com' is therefore not allowed access. The response had HTTP status code 503.

this is also presenting the following error Error: 100 XMLHttpRequest failed: {}

[ghost]

When does this start happening to you?
By the way, Parse.com's service status is now Investigating - We are experiencing elevated error rates for some applications.
I wonder if that is related to the problem.

[JacobCorlett]

I wasn't in the office, By my colleagues have said around 1 - 2 hours ago. 90% of queries are failing by the look of it.

No code on our app has been changed in a good few weeks and it has worked perfectly until today.

[ghost]

I see, for me even a simple query(not nested or with any "where"s) fails for most of the time.

[JacobCorlett]

I think it must be down too Parse.com's service status as Now even loading data directly through there interface isn't working for me. So I doubt this is a JS SDK error and just there side.

[ghost]

Yes, their backend is not working for me now either...

[JacobCorlett]

Working. Must have been that service error.

[parse-github-bot]

Thank you for your feedback. We use the issue tracker here to track valid bugs in our SDK. Your question seems to be more about how to use Parse. Could you check out the following resources?

• Documentation: https://www.parse.com/docs
• Google Groups: https://groups.google.com/forum/#!forum/parse-developers
• Stack Overflow: http://stackoverflow.com/tags/parse.com