Notification mails with german language: No message_de file generated

On updating a fully updated Turris 3.8 Omnia Turris I get this:

root@amrita:~# updater.sh
tail: can't open '/usr/share/updater/approvals': No such file or directory
tail: no files
WARN:Script revision-specific not found, but ignoring its absence as requested
WARN:Script serial-specific not found, but ignoring its absence as requested
WARN:Request not satisfied to install package: dnsmasq
WARN:Request not satisfied to install package: knot-resolver
WARN:Requested package luci-i18n-ddns-en that is missing, ignoring as requested.
WARN:Request not satisfied to install package: luci-app-minidlna
WARN:Request not satisfied to install package: luci-app-mjpg-streamer
WARN:Request not satisfied to install package: luci-app-tinyproxy
WARN:Request not satisfied to install package: luci-app-transmission
WARN:Request not satisfied to install package: luci-i18n-minidlna-en
WARN:Request not satisfied to install package: luci-i18n-tinyproxy-en
WARN:Request not satisfied to install package: luci-i18n-transmission-en
WARN:Request not satisfied to install package: luci-i18n-minidlna-de
WARN:Request not satisfied to install package: luci-i18n-tinyproxy-de
WARN:Request not satisfied to install package: luci-i18n-transmission-de
Working on message: 1505925741-3152
cat: can't open '/tmp/user_notify/1505925741-3152/message_de': No such file or directory
Working on message: 1505925782-3316
cat: can't open '/tmp/user_notify/1505925782-3316/message_de': No such file or directory
Working on message: 1505925839-3496
cat: can't open '/tmp/user_notify/1505925839-3496/message_de': No such file or directory
Working on message: 1505925948-3827
cat: can't open '/tmp/user_notify/1505925948-3827/message_de': No such file or directory
msmtp: network read error: the operation timed out
msmtp: could not send mail (account default from /tmp/user_notify/.locked/msmtp.cfg.4441)

Now, first thing is… Internet access works okay:

root@amrita:~# ping -c1 turris.cz 
PING turris.cz (217.31.192.105): 56 data bytes
64 bytes from 217.31.192.105: seq=0 ttl=54 time=51.256 ms

--- turris.cz ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 51.256/51.256/51.256 ms

But german notification mail files are indeed missing:

root@amrita:~# find /tmp/user_notify/
/tmp/user_notify/
/tmp/user_notify/1505925948-3827
/tmp/user_notify/1505925948-3827/message_en
/tmp/user_notify/1505925948-3827/message_cs
/tmp/user_notify/1505925948-3827/severity
/tmp/user_notify/1505925839-3496
/tmp/user_notify/1505925839-3496/message_en
/tmp/user_notify/1505925839-3496/message_cs
/tmp/user_notify/1505925839-3496/severity
/tmp/user_notify/1505925782-3316
/tmp/user_notify/1505925782-3316/message_en
/tmp/user_notify/1505925782-3316/message_cs
/tmp/user_notify/1505925782-3316/severity
/tmp/user_notify/1505925741-3152
/tmp/user_notify/1505925741-3152/message_en
/tmp/user_notify/1505925741-3152/message_cs
/tmp/user_notify/1505925741-3152/severity

Hmmm… I read the messages with:

root@amrita:/tmp/user_notify# grep . */*

for now, but would be fine to get mails sent again.