cannot run qt example WebEngine Content Manipulation on qt 5.7.0

[pedrito]

If I run the exmple, I get these errors:

qt.qpa.gl: Unable to disable rotation.
[0509/143610:ERROR:scoped_ole_initializer.cc(20)] Multiple OleInitialize() calls for thread 4928
[0509/143612:ERROR:visitedlink_master.cc(73)] Failed to open file C:\Users\schneider\AppData\Local\contentmanipulation\QtWebEngine\Default\Visited Links

Is this a problem with my installation???
[0509/143653:FATAL:resource_scheduler.cc(1051)] Check failed: client_map_.empty().