!22815 Update bprop error information

Merge pull request !22815 from JoyLvliang/update_bprop_error_information

mindspore/ccsrc/pipeline/pynative/pynative_execute.cc

@@ -2367,8 +2367,7 @@ void GradExecutor::DoGradForCustomBprop(const py::object &cell, const py::object
   MS_LOG(DEBUG) << "Do grad for custom bprop";
   size_t par_number = py::tuple(parse::python_adapter::CallPyObjMethod(cell, "get_parameters")).size();
   if (par_number > 0) {
-    MS_LOG(EXCEPTION) << "When user defines the net bprop, there are " << par_number
-                      << " parameters that is not supported in the net.";
+    MS_LOG(EXCEPTION) << "When user defines the net bprop, the 'Parameter' data type is not supported in the net.";
   }
   py::function bprop_func = py::getattr(cell, parse::CUSTOM_BPROP_NAME);
   auto bprop_func_cellid = GetId(bprop_func);

tests/ut/python/pynative_mode/test_user_define_bprop_check.py

@@ -177,7 +177,7 @@ def test_user_define_bprop_check_parameter():
     grad_net = GradNet(net)
     with pytest.raises(RuntimeError) as ex:
         ret = grad_net(x, sens)
-    assert "When user defines the net bprop, there are 1 parameters that is not supported in the net." in str(ex.value)
+    assert "When user defines the net bprop, the 'Parameter' data type is not supported in the net." in str(ex.value)
 
 
 def test_user_define_bprop_check_number():