[root@gnb404508 ~]# systemctl stop firewalld.service 
[root@gnb404508 ~]# remote-viewer --spice-debug spice://localhost:5900(remote-viewer:2886): GSpice-DEBUG: spice-session.c:171 New session (compiled from package spice-gtk 0.20)
(remote-viewer:2886): GSpice-DEBUG: spice-session.c:175 Supported channels: main, display, inputs, cursor, playback, record, smartcard, usbredir
(remote-viewer:2886): GSpice-DEBUG: usb-device-manager.c:856 device added 0x11e0f60
(remote-viewer:2886): GSpice-DEBUG: usb-device-manager.c:856 device added 0x11e0f20
(remote-viewer:2886): GSpice-DEBUG: usb-device-manager.c:856 device added 0x11e0d50
(remote-viewer:2886): GSpice-DEBUG: usb-device-manager.c:856 device added 0x11cf840
(remote-viewer:2886): GSpice-DEBUG: usb-device-manager.c:856 device added 0x11dad50
(remote-viewer:2886): GSpice-DEBUG: usb-device-manager.c:856 device added 0x11d84d0
(remote-viewer:2886): GSpice-DEBUG: spice-session.c:1602 session: disconnecting 0
(remote-viewer:2886): GSpice-DEBUG: spice-channel.c:127 main-1:0: spice_channel_constructed
(remote-viewer:2886): GSpice-DEBUG: spice-session.c:1909 main-1:0: new main channel, switching
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:809 Changing main channel from (nil) to 0x11f2750
(remote-viewer:2886): GSpice-DEBUG: spice-channel.c:2385 main-1:0: Open coroutine starting 0x11f2750
(remote-viewer:2886): GSpice-DEBUG: spice-channel.c:2231 main-1:0: Started background coroutine 0x11f27e0
(remote-viewer:2886): GSpice-DEBUG: spice-session.c:1722 connecting 0x7f827fe328b0...
(remote-viewer:2886): GSpice-DEBUG: spice-session.c:1791 open host localhost:5900
(remote-viewer:2886): GSpice-DEBUG: spice-session.c:1708 connect ready

(remote-viewer:2886): GSpice-WARNING **: HTTP proxy connection failed: 403 Forbidden
(remote-viewer:2886): GSpice-DEBUG: spice-channel.c:2255 main-1:0: trying with TLS port
(remote-viewer:2886): GSpice-DEBUG: spice-channel.c:2259 main-1:0: Connect error
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:464 clipboard_get_targets:
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:464 clipboard_get_targets:
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:464 clipboard_get_targets:
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:468  "text/plain"
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:468  "UTF8_STRING"
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:468  "STRING"
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:468  "TEXT"
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:468  "COMPOUND_TEXT"
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:468  "TARGETS"
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:468  "MULTIPLE"
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:468  "TIMESTAMP"
(remote-viewer:2886): GSpice-DEBUG: spice-gtk-session.c:468  "SAVE_TARGETS"
(remote-viewer:2886): GSpice-DEBUG: spice-session.c:1602 session: disconnecting 0
(remote-viewer:2886): GSpice-DEBUG: spice-channel.c:2036 main-1:0: channel destroy
(remote-viewer:2886): GSpice-DEBUG: spice-channel.c:2585 main-1:0: channel disconnect 0
(remote-viewer:2886): GSpice-DEBUG: spice-session.c:171 New session (compiled from package spice-gtk 0.20)
(remote-viewer:2886): GSpice-DEBUG: spice-session.c:175 Supported channels: main, display, inputs, cursor, playback, record, smartcard, usbredir
(remote-viewer:2886): GSpice-DEBUG: usb-device-manager.c:856 device added 0x12df250
(remote-viewer:2886): GSpice-DEBUG: usb-device-manager.c:856 device added 0x12bf900
(remote-viewer:2886): GSpice-DEBUG: usb-device-manager.c:856 device added 0x12920b0
(remote-viewer:2886): GSpice-DEBUG: usb-device-manager.c:856 device added 0x12cbe70
(remote-viewer:2886): GSpice-DEBUG: usb-device-manager.c:856 device added 0x12f56b0
(remote-viewer:2886): GSpice-DEBUG: usb-device-manager.c:856 device added 0x1270b20
(remote-viewer:2886): GSpice-DEBUG: spice-channel.c:2363 main-1:0: Coroutine exit main-1:0
(remote-viewer:2886): GSpice-DEBUG: spice-session.c:1602 session: disconnecting 0
(remote-viewer:2886): GSpice-DEBUG: spice-session.c:191 session dispose
(remote-viewer:2886): GSpice-DEBUG: spice-session.c:1602 session: disconnecting 1