use C4::Context;
use C4::Letters qw( GetLetterTemplates );
+use Koha::Database;
+my $schema = Koha::Database->new->schema;
+$schema->storage->txn_begin;
my $dbh = C4::Context->dbh;
-$dbh->{RaiseError} = 1;
-$dbh->{AutoCommit} = 0;
$dbh->do(q|DELETE FROM letter|);