chrome-devtools-frontend
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# Ensure CORS requests are made on supported schemes
A cross-origin resource sharing (CORS) request was blocked because the scheme of the request's URL doesn't support CORS.
To fix this issue, ensure all CORS request URLs specify a supported scheme, e.g. most commonly https://.
Note that if an opaque response is sufficient, then for some schemes the request's mode can be set to `no-cors` to fetch the resource with CORS disabled; that way the scheme doesn't need to support CORS, but the response content is inaccessible (opaque).