Firefox: выход из-за ошибки канала

Я новичок в Ubuntu, и у меня возникают проблемы с запуском Firefox 77 в Ubuntu 18.04. Это ошибка, которая отображается:

Exiting due to channel error.

###!!! [Parent][MessageChannel] Error: (msgtype=0x200055,name=PBrowser::Msg_UpdateEffects) Channel error: cannot send/recv


(firefox:724): LIBDBUSMENU-GLIB-WARNING **: 15:44:00.357: Unable to get session bus: Error spawning command line “dbus-launch --autolaunch=a1179a4949cc463f9b173074c5d11ce1 --binary-syntax --close-stderr”: Child process exited with code 1

###!!! [Parent][MessageChannel] Error: (msgtype=0x200098,name=PBrowser::Msg_SetDocShellIsActive) Channel error: cannot send/recv


###!!! [Parent][MessageChannel] Error: (msgtype=0x380077,name=PContent::Msg_LoadURI) Channel error: cannot send/recv


###!!! [Parent][MessageChannel] Error: (msgtype=0x380050,name=PContent::Msg_LoadProcessScript) Channel error: cannot send/recv


###!!! [Parent][MessageChannel] Error: (msgtype=0x380035,name=PContent::Msg_UpdateSharedData) Channel error: cannot send/recv

[Parent 724, Main Thread] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /build/firefox-_bVJH1/firefox-77.0~b9+build1/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 19

###!!! [Parent][MessageChannel] Error: (msgtype=0x380035,name=PContent::Msg_UpdateSharedData) Channel error: cannot send/recv

[Parent 724, Main Thread] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /build/firefox-_bVJH1/firefox-77.0~b9+build1/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 19

###!!! [Parent][MessageChannel] Error: (msgtype=0x380035,name=PContent::Msg_UpdateSharedData) Channel error: cannot send/recv

[Parent 724, Main Thread] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /build/firefox-_bVJH1/firefox-77.0~b9+build1/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 19

###!!! [Parent][MessageChannel] Error: (msgtype=0x380035,name=PContent::Msg_UpdateSharedData) Channel error: cannot send/recv

[Parent 724, Main Thread] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /build/firefox-_bVJH1/firefox-77.0~b9+build1/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 19

###!!! [Parent][MessageChannel] Error: (msgtype=0x380035,name=PContent::Msg_UpdateSharedData) Channel error: cannot send/recv

[Parent 724, Main Thread] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /build/firefox-_bVJH1/firefox-77.0~b9+build1/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 19
Exiting due to channel error.
Exiting due to channel error.
Exiting due to channel error.