Original error: unknown error: unable to discover open pages

[cherishtong]

Original error: unknown error: unable to discover open pages

[WD Proxy] Got response with status 200: {"sessionId":"f34c376720dcd3102bd8b0ece094a919","status":13,"value":{"message":"unknown error: unable to discover open pages\n  (Driver info: chromedriver=2.21.371459 (36d3d07f660ff2bc1bf28a75d1cdabed0983e7c4),platform=Windows NT 6.1 SP1 x86_64)"}}
[WD Proxy] Got an unexpected response: {"sessionId":"f34c376720dcd3102bd8b0ece094a919","status":13,"value":{"message":"unknown error: unable to discover open pages\n  (Driver info: chromedriver=2.21.371459 (36d3d07f660ff2bc1bf28a75d1cdabed0983e7c4),platform=Windows NT 6.1 SP1 x86_64)"}}
[debug] [MJSONWP] Matched JSONWP error code 13 to UnknownError
[Chromedriver] Error: Failed to start Chromedriver session: An unknown server-side error occurred while processing the
command. Original error: unknown error: unable to discover open pages
[Chromedriver]   (Driver info: chromedriver=2.21.371459 (36d3d07f660ff2bc1bf28a75d1cdabed0983e7c4),platform=Windows NT
6.1 SP1 x86_64)
[Chromedriver]     at Object.wrappedLogger.errorAndThrow (D:\autotest\nbpadAutoTest\node_modules\_appium-support@2.26.1@appium-support\lib\logging.js:78:13

-chromedriver-version:2.21.371459
-android system webview:46.0.2490.76

help!Thanks!

[jlipps]

this message is coming directly from chromedriver, so please report it at the chromedriver project.