CONSOLE ERROR: line 37: Uncaught SecurityError: Failed to read the 'contentDocument' property from 'HTMLIFrameElement': Blocked a frame with origin "https://web-platform.test:8444" from accessing a frame with origin "null". The frame requesting access has a protocol of "https", the frame being accessed has a protocol of "data". Protocols must match.This is a testharness.js-based test. Harness Error. harness_status.status = 1 , harness_status.message = Uncaught SecurityError: Failed to read the 'contentDocument' property from 'HTMLIFrameElement': Blocked a frame with origin "https://web-platform.test:8444" from accessing a cross-origin frame. FAIL Verify redirect mode of Fetch API and ServiceWorker FetchEvent. promise_test: Unhandled rejection with value: object "Error: Redirected iframe loading with Request.redirect=follow assert_unreached: unregister should fail." not fail: Failed to get a ServiceWorkerRegistration: The URL protocol of the current origin ('file://') is not supported. Reached unreachable code FAIL Verify redirected of Response(Fetch API) and ServiceWorker FetchEvent. promise_test: Unhandled rejection with value: object "Error: wait_for_state must be passed assert_unreached: unregister should not fail: Failed to get a ServiceWorker" ServiceWorkerRegistration: The URL protocol of the current origin ('file://') is not supported. Reached unreachable code FAIL Verify redirected of Response(Fetch API), Cache API and ServiceWorker FetchEvent. promise_test: Unhandled rejection with value: object "Error: wait_for_state must be passed assert_unreached: unregister should not fail: Failed to get a ServiceWorker" ServiceWorkerRegistration: The URL protocol of the current origin ('file://') is not supported. Reached unreachable code Harness: the test ran to completion.