fix: minor bugs and route errors

application/api/user/routes.py

@@ -1500,7 +1500,10 @@ class PinnedAgents(Resource):
                     "description": agent.get("description", ""),
                     "source": (
                         str(db.dereference(agent["source"])["_id"])
-                        if "source" in agent and isinstance(agent["source"], DBRef)
+                        if "source" in agent
+                        and agent["source"]
+                        and isinstance(agent["source"], DBRef)
+                        and db.dereference(agent["source"]) is not None
                         else ""
                     ),
                     "chunks": agent.get("chunks", ""),

application/requirements.txt

@@ -46,7 +46,7 @@ pandas==2.2.3
 openpyxl==3.1.5
 pathable==0.4.4
 pillow==11.1.0
-portalocker==3.1.1
+portalocker>=2.7.0,<3.0.0
 prance==23.6.21.0
 prompt-toolkit==3.0.51
 protobuf==5.29.3
@@ -62,7 +62,7 @@ python-dotenv==1.0.1
 python-jose==3.4.0
 python-pptx==1.0.2
 redis==5.2.1
-referencing==0.36.2
+referencing>=0.28.0,<0.31.0
 regex==2024.11.6
 requests==2.32.3
 retry==0.9.2