X-Git-Url: http://wagnertech.de/git?a=blobdiff_plain;f=SL%2FDB%2FInvoice.pm;h=14c11fa7d6b5c48e6d606d80be41ff497f4294f5;hb=bf8db146f807d3f374334f9b91671d32592c5974;hp=758f91a61b230170a62cc0a892cafd6d1611f811;hpb=1072cd08c6f5b1905a34dcb3eeab3ddec98d6905;p=kivitendo-erp.git

diff --git a/SL/DB/Invoice.pm b/SL/DB/Invoice.pm
index 758f91a61..14c11fa7d 100644
--- a/SL/DB/Invoice.pm
+++ b/SL/DB/Invoice.pm
@@ -93,7 +93,7 @@ sub taxamount {
   my $self = shift;
   die 'not a setter method' if @_;
 
-  return $self->amount - $self->netamount;
+  return ($self->amount || 0) - ($self->netamount || 0);
 }
 
 __PACKAGE__->meta->make_attr_helpers(taxamount => 'numeric(15,5)');
@@ -178,7 +178,7 @@ sub post {
   if ($self->db->in_transaction) {
     $worker->();
   } elsif (!$self->db->do_transaction($worker)) {
-    $::lxdebug->message(0, "convert_to_invoice failed: " . join("\n", (split(/\n/, $self->db->error))[0..2]));
+    $::lxdebug->message(LXDebug->WARN(), "convert_to_invoice failed: " . join("\n", (split(/\n/, $self->db->error))[0..2]));
     return undef;
   }