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chromium/third_party/blink/web_tests/external/wpt/workers/interfaces/WorkerGlobalScope/onerror/message-classic-Error.html 

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="./message-helper.js"></script>
<script>
runTest('classic', 'Error');
</script>