Refactor (#4303)

### What problem does this PR solve?

### Type of change
- [x] Refactoring

agent/component/base.py

 
     def get_input(self):
         if self._param.debug_inputs:
-            return pd.DataFrame([{"content": v["value"]} for v in self._param.debug_inputs])
+            return pd.DataFrame([{"content": v["value"]} for v in self._param.debug_inputs if v.get("value")])
 
         reversed_cpnts = []
         if len(self._canvas.path) > 1:

api/apps/__init__.py

                 return user[0]
             else:
                 return None
-        except Exception:
-            logging.exception("load_user got exception")
+        except Exception as e:
+            logging.warning(f"load_user got exception {e}")
             return None
     else:
         return None

api/apps/conversation_app.py

             "message": [{"role": "assistant", "content": dia.prompt_config["prologue"]}]
         }
         ConversationService.save(**conv)
-        e, conv = ConversationService.get_by_id(conv["id"])
-        if not e:
-            return get_data_error_result(message="Fail to new a conversation!")
-        conv = conv.to_dict()
         return get_json_result(data=conv)
     except Exception as e:
         return server_error_response(e)

api/db/services/document_service.py

     def insert(cls, doc):
         if not cls.save(**doc):
             raise RuntimeError("Database error (Document)!")
-        e, doc = cls.get_by_id(doc["id"])
-        if not e:
-            raise RuntimeError("Database error (Document retrieval)!")
-        e, kb = KnowledgebaseService.get_by_id(doc.kb_id)
+        e, kb = KnowledgebaseService.get_by_id(doc["kb_id"])
         if not KnowledgebaseService.update_by_id(
                 kb.id, {"doc_num": kb.doc_num + 1}):
             raise RuntimeError("Database error (Knowledgebase)!")
-        return doc
+        return Document(**doc)
 
     @classmethod
     @DB.connection_context()

api/utils/api_utils.py

 
 def get_data_error_result(code=settings.RetCode.DATA_ERROR,
                           message='Sorry! Data missing!'):
+    logging.exception(Exception(message))
     result_dict = {
         "code": code,
         "message": message}

rag/svr/task_executor.py

 FAILED_TASKS = 0
 CURRENT_TASK = None
 
+
 class TaskCanceledException(Exception):
     def __init__(self, msg):
         self.msg = msg
 
+
 def set_progress(task_id, from_page=0, to_page=-1, prog=None, msg="Processing..."):
     global PAYLOAD
     if prog is not None and prog < 0:
             STORAGE_IMPL.put(task["kb_id"], d["id"], output_buffer.getvalue())
             el += timer() - st
         except Exception:
-            logging.exception("Saving image of chunk {}/{}/{} got exception".format(task["location"], task["name"], d["_id"]))
+            logging.exception("Saving image of chunk {}/{}/{} got exception".format(task["location"], task["name"], d["id"]))
             raise
 
         d["img_id"] = "{}-{}".format(task["kb_id"], d["id"])
         if not c:
             c = d["content_with_weight"]
         c = re.sub(r"</?(table|td|caption|tr|th)( [^<>]{0,12})?>", " ", c)
+        if not c:
+            c = "None"
         cnts.append(c)
 
     tk_count = 0
     return res, tk_count, vector_size
 
 
-
-
 def do_handle_task(task):
     task_id = task["id"]
     task_from_page = task["from_page"]