[Koha] Database update error on upgrade from 3.2.6 to 3.2.7 using debian package

[John Seymour]

Hi

When I upgraded our Koha install from 3.2.6 to 3.2.7. I had the 
following error messages are they important?

DBD::mysql::db do failed: Can't DROP 'itemsstocknumberidx'; check that 
column/key exists at 
/usr/share/koha/intranet/cgi-bin/installer/data/mysql/updatedatabase.pl 
line 4020.
DBD::mysql::db do failed: Duplicate key name 'itemstocknumberidx' at 
/usr/share/koha/intranet/cgi-bin/installer/data/mysql/updatedatabase.pl 
line 4021.

yours
John