FIX: Use size for has_errors/has_warnings

src/Entity.jl

@@ -1595,7 +1595,7 @@ Return true if the given `entity` has errors, false otherwise.
 """
 function has_errors(entity::Ref{_Entity})
 
-    return get_errors(entity) > 0
+    return get_errors_size(entity) > 0
 
 end
 
@@ -1606,7 +1606,7 @@ Return true if the given `entity` has warnings, false otherwise.
 """
 function has_warnings(entity::Ref{_Entity})
 
-    return get_warnings(entity) > 0
+    return get_warnings_size(entity) > 0
 
 end