refactor error message of qwen (#3074)

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

### Type of change
- [x] Refactoring

rag/app/qa.py

         for q, a in excel_parser(filename, binary, callback):
             res.append(beAdoc(deepcopy(doc), q, a, eng))
         return res
+
     elif re.search(r"\.(txt|csv)$", filename, re.IGNORECASE):
         callback(0.1, "Start to parse.")
         txt = get_text(filename, binary)
             f"{len(fails)} failure, line: %s..." % (",".join(fails[:3])) if fails else "")))
 
         return res
+
     elif re.search(r"\.pdf$", filename, re.IGNORECASE):
         callback(0.1, "Start to parse.")
         pdf_parser = Pdf()
         qai_list, tbls = pdf_parser(filename if not binary else binary,
                                     from_page=0, to_page=10000, callback=callback)
-        
-
         for q, a, image, poss in qai_list:
             res.append(beAdocPdf(deepcopy(doc), q, a, eng, image, poss))
         return res
+
     elif re.search(r"\.(md|markdown)$", filename, re.IGNORECASE):
         callback(0.1, "Start to parse.")
         txt = get_text(filename, binary)

rag/llm/chat_model.py

 #  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
                             [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)