refactor error message of qwen (#3074)

### What problem does this PR solve?
#3055

### Type of change
- [x] Refactoring

rag/llm/chat_model.py

@@ -13,6 +13,8 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 #
+import re
+
 from openai.lib.azure import AzureOpenAI
 from zhipuai import ZhipuAI
 from dashscope import Generation
@@ -275,8 +277,7 @@ class QWenChat(Base):
                             [ans]) else "······\n由于长度的原因，回答被截断了，要继续吗？"
                     yield ans
                 else:
-                    yield ans + "\n**ERROR**: " + resp.message if str(resp.message).find(
-                        "Access") < 0 else "Out of credit. Please set the API key in **settings > Model providers.**"
+                    yield ans + "\n**ERROR**: " + resp.message if not re.search(r" (key|quota)", str(resp.message).lower()) else "Out of credit. Please set the API key in **settings > Model providers.**"
         except Exception as e:
             yield ans + "\n**ERROR**: " + str(e)