To install webdriverAgent simulator, URL returned to normal, but the equipment selection of real machine, error, and cannot be opened.
Can some one please help me on this.

The error message is as follows:

2017-05-22 17:39:02.158459+0800 XCTRunner[10685:4391074] Running tests…
2017-05-22 17:39:02.769372+0800 XCTRunner[10685:4391074] Continuing to run tests in the background with task ID 1
Test Suite ‘All tests’ started at 2017-05-22 17:39:03.945
Test Suite ‘WebDriverAgentRunner.xctest’ started at 2017-05-22 17:39:03.946
Test Suite ‘UITestingUITests’ started at 2017-05-22 17:39:03.947
Test Case ‘-[UITestingUITests testRunner]’ started.
t = 0.00s Start Test at 2017-05-22 17:39:03.948
t = 0.00s Set Up
2017-05-22 17:39:03.964421+0800 XCTRunner[10685:4391127] [User Defaults] Failed to write value for key AutomationDisableFauxCollectionCells in CFPrefsPlistSource<0x1741069c0> (Domain:, User: kCFPreferencesCurrentUser, ByHost: No, Container: (null)): setting preferences outside an application’s container requires user-preference-write or file-write-data sandbox access, switching to read-only
2017-05-22 17:39:03.965450+0800 XCTRunner[10685:4391074] Built at May 22 2017 10:52:51
2017-05-22 17:39:03.987642+0800 XCTRunner[10685:4391074] ServerURLHere-><-ServerURLHere

How should I do to solve the problem?