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Error: Unable to connect to Neutron.

i got this error on horizon i installed opentack rocky on bionic here is neutron-server.log :

2019-01-31 10:53:55.264 76193 WARNING neutron.pecan_wsgi.controllers.root [req-6cf2464e-69ee-4860-b948-603550e14aea 1dc9b1005e6346efacb2dff0cbd8b1f5 ca670b2225744c74a029fa6125968404 - default default] No controller found for: floatingips - returning response code 404: PecanNotFound
2019-01-31 10:53:55.265 76193 INFO neutron.pecan_wsgi.hooks.translation [req-6cf2464e-69ee-4860-b948-603550e14aea 1dc9b1005e6346efacb2dff0cbd8b1f5 ca670b2225744c74a029fa6125968404 - default default] GET failed (client error): The resource could not be found.
2019-01-31 10:53:55.266 76193 INFO neutron.wsgi [req-6cf2464e-69ee-4860-b948-603550e14aea 1dc9b1005e6346efacb2dff0cbd8b1f5 ca670b2225744c74a029fa6125968404 - default default] 10.0.0.10 "GET /v2.0/floatingips?tenant_id=ca670b2225744c74a029fa6125968404 HTTP/1.1" status: 404  len: 309 time: 0.0047810
2019-01-31 10:53:55.469 76193 INFO neutron.wsgi [req-0814ce0c-a243-4844-99e4-0e5d7a820412 1dc9b1005e6346efacb2dff0cbd8b1f5 ca670b2225744c74a029fa6125968404 - default default] 10.0.0.10 "GET /v2.0/extensions HTTP/1.1" status: 200  len: 7807 time: 0.0039718

and here is error.log apache2 :

Thu Jan 31 10:53:38.123455 2019] [wsgi:error] [pid 76239:tid 139765377365760] [remote X.X.X.X:16532] INFO openstack_auth.forms Login successful for user "admin" using domain "default", remote address X.X.X.X.
[Thu Jan 31 10:53:55.267856 2019] [wsgi:error] [pid 76242:tid 139765444507392] [remote X.X.X.X:16540] ERROR openstack_dashboard.api.neutron Unable to connect to Neutron: The resource could not be found.

PLease help fixed this problem