diff --git a/server/database/utils.py b/server/database/utils.py
index c7e211f..1af37b8 100644
--- a/server/database/utils.py
+++ b/server/database/utils.py
@@ -96,7 +96,12 @@ def parse_from_call(call_data, fields, cls_fields, discard_none_values=True):
                 continue
             if desc:
                 if callable(desc):
-                    desc(value)
+                    try:
+                        desc(value)
+                    except TypeError:
+                        raise ParseCallError(f"expecting {desc.__name__}", field=field)
+                    except Exception as ex:
+                        raise ParseCallError(str(ex), field=field)
                 else:
                     if issubclass(desc, (list, tuple, dict)) and not isinstance(
                         value, desc