I cannot start fcitx5 on kubuntu 20.04

Hello,
I am trying to type in Chinese with Kuduntu 20.04 without success. When I type fcitx5 in a Konsole, I get this
QUOTE
I instance.cpp:919] Override Enabled Addons: {}
I instance.cpp:920] Override Disabled Addons: {}
I addonmanager.cpp:177] Loaded addon wayland
I addonmanager.cpp:177] Loaded addon unicode
I addonmanager.cpp:177] Loaded addon xcb
I addonmanager.cpp:177] Loaded addon quickphrase
I addonmanager.cpp:177] Loaded addon punctuation
I isocodes.cpp:42] 639-3
I isocodes.cpp:42] 3166-1
I addonmanager.cpp:177] Loaded addon keyboard
I addonmanager.cpp:177] Loaded addon clipboard
I addonmanager.cpp:177] Loaded addon waylandim
I addonmanager.cpp:177] Loaded addon dbus
I addonmanager.cpp:177] Loaded addon ibusfrontend
execl: Aucun fichier ou dossier de ce type
E xim.cpp:99] Failed to open xim, retrying.
E xim.cpp:99] Failed to open xim, retrying.
E xim.cpp:99] Failed to open xim, retrying.
I addonmanager.cpp:177] Loaded addon xim
I addonmanager.cpp:177] Loaded addon dbusfrontend
I inputmethodmanager.cpp:117] Found 683 input method(s) in addon keyboard
I addonmanager.cpp:177] Loaded addon kimpanel
I addonmanager.cpp:177] Loaded addon classicui
I addonmanager.cpp:177] Loaded addon notificationitem
I kimpanel.cpp:101] Kimpanel new owner:1.43
UNQUOTE
Then, the program stops. Can you help?