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CORS error when adding the web map to Experience Builder

09-22-2020 09:22 PM
by Anonymous User
Not applicable


My client is getting this error when he goes to experience builder to add data > select the web map created in ArcGIS Online > he got 'item does not exist or inaccessible' in experience builder. Developer tools shows CORS error in the console:

Access to fetch at '' from origin '' has been blocked by CORS policy: The 'Access-Control-Allow-Origin' header has a value '' that is not equal to the supplied origin. Have the server send the header with a valid value, or, if an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

- He is getting this error consistently in the browser

- I was able to replicate the issue at the beginning but it works if I try again.

- There is no issue when he tested with sampleserver6 map service. 



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