fix error in printing error

pym/core/server/local_call.py

@@ -415,7 +415,7 @@ def call_method(metaObject, args, unknown_args, colorPrint):
         if hasattr(e, "message"):
             _print(e.message)
         else:
-            _print(e)
+            _print(str(e))
         return None
     #for ReturnedMessage in method_result:
     #    if ReturnedMessage.type and ReturnedMessage.type != "pid":

pym/core/server/methods_func.py

@@ -457,6 +457,8 @@ def display_error(error, args, groups):
                     __print.bold.foreground(TextState.Colors.WHITE)("*")
                 __print("\n")
     elif error.type not in lesser_errors:
+        if '%s' not in params_text:
+            params_text += '%s'
         colorPrint.printERROR(params_text % error.message)
     else:
         colorPrint.printWARNING(error.message)