$ cat .xsession-errors | grep claws

(claws-mail:1982): GLib-GObject-WARNING **: 11:05:47.876: ../../../gobject/gsignal.c:2692: handler '70504' of instance '0x1280f50' is not blocked
(claws-mail:1982): GLib-GObject-WARNING **: 13:00:37.583: ../../../gobject/gsignal.c:2692: handler '80957' of instance '0x1280f50' is not blocked
(claws-mail:1982): GLib-GObject-WARNING **: 16:26:47.995: ../../../gobject/gsignal.c:2692: handler '93343' of instance '0x1828560' is not blocked
(claws-mail:1982): GLib-GObject-WARNING **: 16:27:51.410: ../../../gobject/gsignal.c:2692: handler '109393' of instance '0x1828560' is not blocked
dbus-daemon[1872]: Activating service name='org.a11y.atspi.Registry' requested by ':1.6' (uid=1000 pid=1957 comm="/usr/bin/claws-mail " label="unconfined")
/home/********/Mail/inbox/31: claws_fopen: No such file or directory
** (claws-mail:1957): WARNING **: 08:39:05.688: LH: couldn't get MIME part file
(claws-mail:2015): GLib-GObject-WARNING **: 12:40:02.571: ../../../gobject/gsignal.c:2613: signal 'changed' is invalid for instance '0x2279390' of type 'GtkCheckButton'
(claws-mail:2015): GLib-GObject-WARNING **: 12:40:02.572: ../../../gobject/gsignal.c:2613: signal 'changed' is invalid for instance '0x2279570' of type 'GtkCheckButton'
(claws-mail:2015): GLib-GObject-WARNING **: 12:40:55.908: ../../../gobject/gsignal.c:2692: handler '75814' of instance '0x10f1a10' is not blocked
kf.kio.slaves.file: copy() QUrl("file:///home/********/.claws-mail/clawsrc") to QUrl("file:///home/********/.claws-mail/clawsrc") mode= 384
kf.kio.slaves.file: copy() QUrl("file:///home/********/.claws-mail/clawsrc") to QUrl("file:///home/********/.claws-mail/clawsrc_keep_221108") mode= 384
(claws-mail:1967): GLib-GObject-WARNING **: 09:18:34.217: ../../../gobject/gsignal.c:2692: handler '43212' of instance '0x1c33a10' is not blocked
(claws-mail:1967): GLib-GObject-WARNING **: 09:53:16.096: ../../../gobject/gsignal.c:2692: handler '54442' of instance '0x1c33a10' is not blocked
(claws-mail:1967): GLib-GObject-WARNING **: 10:43:34.649: ../../../gobject/gsignal.c:2692: handler '91477' of instance '0x22d4c80' is not blocked
kf.kio.slaves.file: copy() QUrl("file:///home/********/.claws-mail/clawsrc") to QUrl("file:///home/********/.claws-mail/clawsrc") mode= 384
kf.kio.slaves.file: copy() QUrl("file:///home/********/.claws-mail/clawsrc") to QUrl("file:///home/********/.claws-mail/clawsrc_MV_shown") mode= 384