More import errors

Should I be worried about the following errors:

Jul 11 08:45:52 dhcp6 RT: Resolver RT::URI::fsck_com_rt could not parse
38288 (/opt/rt3/lib/RT/URI.pm:121)
Jul 11 08:45:53 dhcp6 RT: Use of uninitialized value in concatenation
(.) or string at /opt/rt3/lib/RT/URI/fsck_com_rt.pm line 94.
(/opt/rt3/lib/RT.pm:235)

Jul 11 03:17:59 dhcp6 RT: Failed to create user : Must specify 'Name’
attribute (/opt/rt3/lib/RT/User_Overlay.pm:595)
Jul 11 03:18:00 dhcp6 RT: Could not load create a user with the email
address ‘’ to add as a watcher for ticket 33619
(/opt/rt3/lib/RT/Ticket_Overlay.pm:1420)

Couldn’t create link from fsck.com-rt:/ticket/37332 to
fsck.com-rt:/ticket/38677

The initial data dump was from Pg, but the import is currently on
Mysql.