我使用 Remmina 建立与远程服务器的 RDP 连接，我有该服务器的凭据。几个月前我还在使用它，运行顺利。今天我再次尝试连接到同一台服务器，但出现错误“无法连接到服务器”，我不知道为什么会出现此错误。当我第一次尝试连接到服务器时，没有出现任何错误，因此我无需更改任何设置，所以我不知道是否有任何设置被错误更改。有人知道我该怎么做才能解决这个问题吗？
编辑：我的 Ubuntu 版本是 22.04，Remmina 版本是 1.4.25 我打开了调试模式。这是日志。如果我把整个日志都删掉了，我很抱歉，但我真的不知道问题出在哪里。也许是 rco_on_disconnect 信号？
(DEBUG) - (rcw_map_event) - Mapping: RemminaConnectionWindow
(DEBUG) - (remmina_protocol_widget_map_event) - Calling plugin
mapping function
(DEBUG) - (remmina_protocol_widget_open_connection_real) - Opening connection
(DEBUG) - (remmina_rdp_event_init) - Disable smooth scrolling is set to 0
(DEBUG) - (remmina_rdp_event_init) - Adding GDK_SMOOTH_SCROLL_MASK
(DEBUG) - (remmina_protocol_widget_open_connection_real) - Have SSH
(DEBUG) - (remmina_rdp_main) - RDP data path is /home/francesco/.local/share/remmina/RDP
(DEBUG) - (remmina_rdp_main) - Not using system proxy settings
(DEBUG) - (remmina_rdp_tunnel_init) - Tunnel init
(DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - SSH tunnel initialization…
(DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - Calling remmina_public_get_server_port
(DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - Calling remmina_public_get_server_port (tunnel)
(DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - server: IP, port: PORT
(DEBUG) - (remmina_rdp_tunnel_init) - protocol_plugin_start_direct_tunnel() returned [IP]:PORT
(DEBUG) - (remmina_rdp_tunnel_init) - Tunnel has been optionally initialized. Now connecting to IP:PORT
(DEBUG) - (remmina_rdp_main) - gfx_h264_available: 0
(DEBUG) - (remmina_rdp_main) - Resolution set by the user: 592x440
(DEBUG) - (remmina_rdp_main) - Resolution set after workarounds: 592x440
(DEBUG) - (remmina_rdp_main) - proxy_type: (null)
(DEBUG) - (remmina_rdp_main) - proxy_username: (null)
(DEBUG) - (remmina_rdp_main) - proxy_password: (null)
(DEBUG) - (remmina_rdp_main) - proxy_hostname: (null)
(DEBUG) - (remmina_rdp_main) - proxy_port: 80
(DEBUG) - (remmina_rdp_main) - Network settings not set
(DEBUG) - (remmina_rdp_main) - rdp_keyboard_remapping_list:
(DEBUG) - (remmina_rdp_main) - Log level set to to INFO
(DEBUG) - (rco_on_disconnect) - Disconnect signal received on RemminaProtocolWidget
(DEBUG) - (remmina_file_save) - Saving profile
(DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0
(DEBUG) - (remmina_plugin_glibsecret_store_password) - Password “password” saved for file /home/francesco/.local/share/remmina/group_rdp_tesi_IP-PORT.remmina
(DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0
(DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_password” deleted for file /home/francesco/.local/share/remmina/group_rdp_tesi_IP-PORT.remmina
(DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0
(DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “gateway_password” deleted for file /home/francesco/.local/share/remmina/group_rdp_tesi_IP-PORT.remmina
(DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0
(DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_passphrase” deleted for file /home/francesco/.local/share/remmina/group_rdp_tesi_IP-PORT.remmina
(DEBUG) - (remmina_file_save) - Profile saved
(DEBUG) - (remmina_file_save) - Connection profile states saved
(DEBUG) - (remmina_network_monitor_status) - G_NETWORK_CONNECTIVITY_FULL
(DEBUG) - (rco_on_disconnect) - Could not disconnect