Error in first attempt... all seems to work but no writing on ftp server (i think)

Tried but i got this error. Seems that ftp cannot wrote. But i tried directly with duplicity and with lftp and i can create directory... any ideas? Thank you

root@ns3012941:/opt/duplicity-automate# duplicity-automate /opt/duplicity-automate/backups.xml /opt/duplicity-automate/servers.xml verbose
<13>Aug 21 16:00:47 duplicity-automate: Starting duplicity-automate with backups file = /opt/duplicity-automate/backups.xml, servers file = /opt/duplicity-automate/servers.xml
<13>Aug 21 16:00:47 duplicity-automate: Making backups to server ftp://xxx.xxx.xxx.eu@username/primobackup (1/1)
<13>Aug 21 16:00:47 duplicity-automate: Making incremental backup of directory /home as "home" (1/2)
Invoking backup command: duplicity --verbosity warning --no-print-statistics --num-retries 3 /home ftp://xxx.xxx.xxx.eu@username/primobackup/home
<13>Aug 21 16:00:47 duplicity-automate: Attempt 1 failed. BackendException: Error running 'lftp -c "source /tmp/duplicity-ypDHeR-tempdir/mkstemp-CZzJEh-1; ( cd primobackup/home/ && ls ) || ( mkdir -p primobackup/home/ && cd primobackup/home/ && ls )"': returned 1, with output:
<13>Aug 21 16:00:47 duplicity-automate:
<13>Aug 21 16:00:47 duplicity-automate: cd: Access failed: 550 Can't change directory to /primobackup/home: No such file or directory
<13>Aug 21 16:00:47 duplicity-automate: mkdir: Access failed: 550-Can't create directory: File exists 49 Kbytes used (0%) - authorized: 524185600 Kb (primobackup/home/)
<13>Aug 21 16:00:47 duplicity-automate:
<13>Aug 21 16:01:18 duplicity-automate: No signatures found, switching to full backup.
^X<13>Aug 21 16:01:19 duplicity-automate: Done: making incremental backup of directory /home as "home" (1/2)
<13>Aug 21 16:01:19 duplicity-automate: Deleting old (older than 12M) backups saved as "home" (1/2)
<13>Aug 21 16:01:20 duplicity-automate: Making incremental backup of MySQL root@127.0.0.1 as "mysqlbackup" (2/2)
Invoking backup command: duplicity --allow-source-mismatch --verbosity warning --no-print-statistics --num-retries 3 /tmp/tmp.KWZIxRVky7 ftp://xxx.xxx.xxx.eu@username/primobackup/mysqlbackup
<13>Aug 21 16:01:20 duplicity-automate: Attempt 1 failed. BackendException: Error running 'lftp -c "source /tmp/duplicity-jPkNze-tempdir/mkstemp-aSlwb_-1; ( cd primobackup/mysqlbackup/ && ls ) || ( mkdir -p primobackup/mysqlbackup/ && cd primobackup/mysqlbackup/ && ls )"': returned 1, with output:
<13>Aug 21 16:01:20 duplicity-automate:
<13>Aug 21 16:01:20 duplicity-automate: cd: Access failed: 550 Can't change directory to /primobackup/mysqlbackup: No such file or directory
<13>Aug 21 16:01:20 duplicity-automate: mkdir: Access failed: 550-Can't create directory: File exists 279 Kbytes used (0%) - authorized: 524185600 Kb (primobackup/mysqlbackup/)
<13>Aug 21 16:01:20 duplicity-automate:
^C<13>Aug 21 16:01:40 duplicity-automate: Done: making incremental backup of MySQL root@127.0.0.1 as "mysqlbackup" (2/2)
<13>Aug 21 16:01:40 duplicity-automate: Deleting old (older than 12M) backups saved as "mysqlbackup" (2/2)
<13>Aug 21 16:01:41 duplicity-automate: Finished
root@ns3012941:/opt/duplicity-automate#