diff --git a/api/apps/chunk_app.py b/api/apps/chunk_app.py
index 1d21bc103..56f39d72a 100644
--- a/api/apps/chunk_app.py
+++ b/api/apps/chunk_app.py
@@ -60,6 +60,11 @@ def list_chunk():
         sres = settings.retrievaler.search(query, search.index_name(tenant_id), kb_ids, highlight=True)
         res = {"total": sres.total, "chunks": [], "doc": doc.to_dict()}
         for id in sres.ids:
+            chunk_elem = sres.field[id]
+            if 'position_list' in chunk_elem:
+                if isinstance(chunk_elem["position_list"], str):
+                    chunk_elem.pop('position_list') # Infinity will store position list as empty str
+
             d = {
                 "chunk_id": id,
                 "content_with_weight": rmSpace(sres.highlight[id]) if question and id in sres.highlight else sres.field[
diff --git a/rag/utils/infinity_conn.py b/rag/utils/infinity_conn.py
index 6f508e8bd..f6345d455 100644
--- a/rag/utils/infinity_conn.py
+++ b/rag/utils/infinity_conn.py
@@ -328,7 +328,7 @@ class InfinityConnection(DocStoreConnection):
             table_instance = db_instance.get_table(table_name)
         except InfinityException as e:
             # src/common/status.cppm, kTableNotExist = 3022
-            if e.error_code != 3022:
+            if e.error_code != ErrorCode.TABLE_NOT_EXIST:
                 raise
             vector_size = 0
             patt = re.compile(r"q_(?P<vector_size>\d+)_vec")
@@ -348,6 +348,9 @@ class InfinityConnection(DocStoreConnection):
             for k, v in d.items():
                 if k.endswith("_kwd") and isinstance(v, list):
                     d[k] = " ".join(v)
+                if k == 'kb_id':
+                    if isinstance(d[k], list):
+                        d[k] = d[k][0] # since d[k] is a list, but we need a str
         ids = ["'{}'".format(d["id"]) for d in documents]
         str_ids = ", ".join(ids)
         str_filter = f"id IN ({str_ids})"