对接vmware环境时创建虚机报错

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{"message": "Build of instance 903b17cb-92d7-484b-9fa9-5739e2dfccff was re-scheduled: local variable 'should_create_vlan' referenced before assignment", "code": 500, "details": "  File \"/usr/lib/python2.7/site-packages/nova/compute/manager.py\", line 2258, in _do_build_and_run_instanc
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: |+ x& {, P: M( [5 s% @| fault                                | {"message": "Build of instance 903b17cb-92d7-484b-9fa9-5739e2dfccff was re-scheduled: local variable 'should_create_vlan' referenced before assignment", "code": 500, "details": "  File \"/usr/lib/python2.7/site-packages/nova/compute/manager.py\", line 2258, in _do_build_and_run_instance
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: A4 }( N: U: t8 Y1 J8 ^- I# ?2017-07-19 14:04:10.287 12447 INFO nova.osapi_compute.wsgi.server [req-b49bec1a-87b8-4909-b7e9-d4406437f62e e8cab5c4855a48eebebae13deb4cf364 d50a9341dc354e0b9eda755ec373400d - - -] 190.168.130.236,190.168.130.236 "GET /v2/d50a9341dc354e0b9eda755ec373400d/flavors/detail?all_tenants=1&is_public=None HTTP/1.1" status: 200 len: 2293 time: 0.016809