Index: openacs-4/packages/xowiki/tcl/form-field-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/form-field-procs.tcl,v
diff -u -r1.284.2.186 -r1.284.2.187
--- openacs-4/packages/xowiki/tcl/form-field-procs.tcl	9 Jan 2022 17:23:26 -0000	1.284.2.186
+++ openacs-4/packages/xowiki/tcl/form-field-procs.tcl	9 Jan 2022 17:35:14 -0000	1.284.2.187
@@ -128,6 +128,8 @@
         if {[string match @* $field_name]} continue
         dict set result $field_name [spec_to_dict -name $field_name $short_spec]
         dict set result $field_name _definition $short_spec
+      } else {
+        ns_log warning "fc_to_dict: ignore invalid form-constraints entry <$fc>"
       }
     }
     return $result