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Custom Knowledge Workflow Error：'NoneType' object has no attribute 'session_id' #18613

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opened 2026-02-21 19:49:47 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 19:49:47 -05:00
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Originally created by @HZJprince on GitHub (Sep 29, 2025).

Originally assigned to: @laipz8200 on GitHub.

Self Checks

  • I have read the Contributing Guide and Language Policy.
  • This is only for bug report, if you would like to ask a question, please head to Discussions.
  • I have searched for existing issues search for existing issues, including closed ones.
  • I confirm that I am using English to submit this report, otherwise it will be closed.
  • 【中文用户 & Non English User】请使用英语提交，否则会被关闭 ：）
  • Please do not modify this template :) and fill in all the required fields.

Dify version

1.9.1

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

the same as Custom Knowledge Workflow Error：'NoneType' object has no attribute 'session_id' #26409

Updated to version 1.9.1, the problem still exists

docker-worker-1 error logs：

2025-09-30 03:29:37.943 ERROR [GraphWorker-1] [node.py:159] - Node 1759202928595 failed to run

Traceback (most recent call last):

File "/app/api/core/workflow/nodes/base/node.py", line 149, in run

for event in result:

             ^^^^^^
File "/app/api/core/workflow/nodes/tool/tool_node.py", line 139, in _run

yield from self._transform_message(
File "/app/api/core/workflow/nodes/tool/tool_node.py", line 259, in _transform_message

for message in message_stream:

               ^^^^^^^^^^^^^^
File "/app/api/core/tools/utils/message_transformer.py", line 67, in transform_tool_invoke_messages

for message in messages:

               ^^^^^^^^
File "/app/api/core/callback_handler/workflow_tool_callback_handler.py", line 21, in on_tool_execution

for tool_output in tool_outputs:

                   ^^^^^^^^^^^^
File "/app/api/core/tools/workflow_as_tool/tool.py", line 83, in _invoke

result = generator.generate(

         ^^^^^^^^^^^^^^^^^^^
File "/app/api/core/app/apps/workflow/app_generator.py", line 120, in generate

user_id=user.id if isinstance(user, Account) else user.session_id,

                                                  ^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'session_id'

2025-09-30 03:29:37.946 ERROR [GraphDispatcher] [error_handler.py:101] - Node 1759202928595 failed with ABORT strategy: 'NoneType' object has no attribute 'session_id'

2025-09-30 03:29:37.946 ERROR [GraphDispatcher] [debug_logging.py:174] - ❌ Node failed: 1759202928595

2025-09-30 03:29:37.947 ERROR [GraphDispatcher] [debug_logging.py:175] - Error: 'NoneType' object has no attribute 'session_id'

2025-09-30 03:29:37.947 ERROR [GraphDispatcher] [debug_logging.py:178] - Details: 'NoneType' object has no attribute 'session_id'

2025-09-30 03:29:38.063 INFO [Dummy-29] [rag_pipeline_run_task.py:77] - tenant_id: 29f23e40-5eb5-43c0-b923-d1fcaee0241e , Rag pipeline run completed. Latency: 0.18707101792097092s

2025-09-30 03:29:38.087 INFO [Dummy-29] [trace.py:128] - Task tasks.rag_pipeline.rag_pipeline_run_task.rag_pipeline_run_task[8b6ee5d1-ca00-497e-9919-b42bf60860e6] succeeded in 0.21067047119140625s: None

2025-09-30 03:29:38.150 INFO [Thread-30 (_generate_worker)] [debug_logging.py:230] - ================================================================================

2025-09-30 03:29:38.151 ERROR [Thread-30 (_generate_worker)] [debug_logging.py:233] - 🔴 GRAPH EXECUTION FAILED

2025-09-30 03:29:38.151 ERROR [Thread-30 (_generate_worker)] [debug_logging.py:234] - Error: 'NoneType' object has no attribute 'session_id'

2025-09-30 03:29:38.151 INFO [Thread-30 (_generate_worker)] [debug_logging.py:239] - Execution Statistics:

2025-09-30 03:29:38.151 INFO [Thread-30 (_generate_worker)] [debug_logging.py:240] - Total nodes executed: 4

2025-09-30 03:29:38.151 INFO [Thread-30 (_generate_worker)] [debug_logging.py:241] - Successful nodes: 3

2025-09-30 03:29:38.151 INFO [Thread-30 (_generate_worker)] [debug_logging.py:242] - Failed nodes: 1

2025-09-30 03:29:38.151 INFO [Thread-30 (_generate_worker)] [debug_logging.py:243] - Node retries: 0

2025-09-30 03:29:38.151 INFO [Thread-30 (_generate_worker)] [debug_logging.py:250] - ================================================================================

2025-09-30 03:29:38.151 ERROR [Thread-30 (_generate_worker)] [workflow_entry.py:110] - Unknown Error when workflow entry running

Traceback (most recent call last):

File "/app/api/core/workflow/workflow_entry.py", line 106, in run

yield from generator
File "/app/api/core/workflow/graph_engine/graph_engine.py", line 262, in run

raise self._graph_execution.error
RuntimeError: 'NoneType' object has no attribute 'session_id'

2025-09-30 03:30:00.002 INFO [MainThread] [strategy.py:161] - Task schedule.check_upgradable_plugin_task.check_upgradable_plugin_task[e68cd920-9019-4a8a-827c-2f0529b15705] received

2025-09-30 03:30:00.004 WARNING [Dummy-31] [log.py:232] - Start check upgradable plugin.

2025-09-30 03:30:00.004 WARNING [Dummy-31] [log.py:232] - Now seconds of day: 12570.004300117493

2025-09-30 03:30:00.008 WARNING [Dummy-31] [log.py:232] - Total strategies: 0

2025-09-30 03:30:00.009 WARNING [Dummy-31] [log.py:232] - Checked upgradable plugin success latency: 0.004747556522488594

2025-09-30 03:30:00.044 INFO [Dummy-31] [trace.py:128] - Task schedule.check_upgradable_plugin_task.check_upgradable_plugin_task[e68cd920-9019-4a8a-827c-2f0529b15705] succeeded in 0.04067472741007805s: None

2025-09-30 03:30:00.045 ERROR [Dummy-31] [init.py:156] - Failed to detach context

Traceback (most recent call last):

File "/app/api/.venv/lib/python3.12/site-packages/opentelemetry/context/init.py", line 154, in detach

_RUNTIME_CONTEXT.detach(token)
File "/app/api/.venv/lib/python3.12/site-packages/opentelemetry/context/contextvars_context.py", line 50, in detach

self._current_context.reset(token)  # type: ignore

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: expected an instance of Token, got None

✔️ Expected Behavior

==

❌ Actual Behavior

==

Originally created by @HZJprince on GitHub (Sep 29, 2025). Originally assigned to: @laipz8200 on GitHub. ### Self Checks - [x] I have read the [Contributing Guide](https://github.com/langgenius/dify/blob/main/CONTRIBUTING.md) and [Language Policy](https://github.com/langgenius/dify/issues/1542). - [x] This is only for bug report, if you would like to ask a question, please head to [Discussions](https://github.com/langgenius/dify/discussions/categories/general). - [x] I have searched for existing issues [search for existing issues](https://github.com/langgenius/dify/issues), including closed ones. - [x] I confirm that I am using English to submit this report, otherwise it will be closed. - [x] 【中文用户 & Non English User】请使用英语提交，否则会被关闭 ：） - [x] Please do not modify this template :) and fill in all the required fields. ### Dify version 1.9.1 ### Cloud or Self Hosted Self Hosted (Docker) ### Steps to reproduce the same as Custom Knowledge Workflow Error：'NoneType' object has no attribute 'session_id' #26409 Updated to version 1.9.1, the problem still exists docker-worker-1 error logs： ``` 2025-09-30 03:29:37.943 ERROR [GraphWorker-1] [node.py:159] - Node 1759202928595 failed to run Traceback (most recent call last): File "/app/api/core/workflow/nodes/base/node.py", line 149, in run for event in result: ^^^^^^ File "/app/api/core/workflow/nodes/tool/tool_node.py", line 139, in _run yield from self._transform_message( File "/app/api/core/workflow/nodes/tool/tool_node.py", line 259, in _transform_message for message in message_stream: ^^^^^^^^^^^^^^ File "/app/api/core/tools/utils/message_transformer.py", line 67, in transform_tool_invoke_messages for message in messages: ^^^^^^^^ File "/app/api/core/callback_handler/workflow_tool_callback_handler.py", line 21, in on_tool_execution for tool_output in tool_outputs: ^^^^^^^^^^^^ File "/app/api/core/tools/workflow_as_tool/tool.py", line 83, in _invoke result = generator.generate( ^^^^^^^^^^^^^^^^^^^ File "/app/api/core/app/apps/workflow/app_generator.py", line 120, in generate user_id=user.id if isinstance(user, Account) else user.session_id, ^^^^^^^^^^^^^^^ AttributeError: 'NoneType' object has no attribute 'session_id' 2025-09-30 03:29:37.946 ERROR [GraphDispatcher] [error_handler.py:101] - Node 1759202928595 failed with ABORT strategy: 'NoneType' object has no attribute 'session_id' 2025-09-30 03:29:37.946 ERROR [GraphDispatcher] [debug_logging.py:174] - ❌ Node failed: 1759202928595 2025-09-30 03:29:37.947 ERROR [GraphDispatcher] [debug_logging.py:175] - Error: 'NoneType' object has no attribute 'session_id' 2025-09-30 03:29:37.947 ERROR [GraphDispatcher] [debug_logging.py:178] - Details: 'NoneType' object has no attribute 'session_id' 2025-09-30 03:29:38.063 INFO [Dummy-29] [rag_pipeline_run_task.py:77] - tenant_id: 29f23e40-5eb5-43c0-b923-d1fcaee0241e , Rag pipeline run completed. Latency: 0.18707101792097092s 2025-09-30 03:29:38.087 INFO [Dummy-29] [trace.py:128] - Task tasks.rag_pipeline.rag_pipeline_run_task.rag_pipeline_run_task[8b6ee5d1-ca00-497e-9919-b42bf60860e6] succeeded in 0.21067047119140625s: None 2025-09-30 03:29:38.150 INFO [Thread-30 (_generate_worker)] [debug_logging.py:230] - ================================================================================ 2025-09-30 03:29:38.151 ERROR [Thread-30 (_generate_worker)] [debug_logging.py:233] - 🔴 GRAPH EXECUTION FAILED 2025-09-30 03:29:38.151 ERROR [Thread-30 (_generate_worker)] [debug_logging.py:234] - Error: 'NoneType' object has no attribute 'session_id' 2025-09-30 03:29:38.151 INFO [Thread-30 (_generate_worker)] [debug_logging.py:239] - Execution Statistics: 2025-09-30 03:29:38.151 INFO [Thread-30 (_generate_worker)] [debug_logging.py:240] - Total nodes executed: 4 2025-09-30 03:29:38.151 INFO [Thread-30 (_generate_worker)] [debug_logging.py:241] - Successful nodes: 3 2025-09-30 03:29:38.151 INFO [Thread-30 (_generate_worker)] [debug_logging.py:242] - Failed nodes: 1 2025-09-30 03:29:38.151 INFO [Thread-30 (_generate_worker)] [debug_logging.py:243] - Node retries: 0 2025-09-30 03:29:38.151 INFO [Thread-30 (_generate_worker)] [debug_logging.py:250] - ================================================================================ 2025-09-30 03:29:38.151 ERROR [Thread-30 (_generate_worker)] [workflow_entry.py:110] - Unknown Error when workflow entry running Traceback (most recent call last): File "/app/api/core/workflow/workflow_entry.py", line 106, in run yield from generator File "/app/api/core/workflow/graph_engine/graph_engine.py", line 262, in run raise self._graph_execution.error RuntimeError: 'NoneType' object has no attribute 'session_id' 2025-09-30 03:30:00.002 INFO [MainThread] [strategy.py:161] - Task schedule.check_upgradable_plugin_task.check_upgradable_plugin_task[e68cd920-9019-4a8a-827c-2f0529b15705] received 2025-09-30 03:30:00.004 WARNING [Dummy-31] [log.py:232] - Start check upgradable plugin. 2025-09-30 03:30:00.004 WARNING [Dummy-31] [log.py:232] - Now seconds of day: 12570.004300117493 2025-09-30 03:30:00.008 WARNING [Dummy-31] [log.py:232] - Total strategies: 0 2025-09-30 03:30:00.009 WARNING [Dummy-31] [log.py:232] - Checked upgradable plugin success latency: 0.004747556522488594 2025-09-30 03:30:00.044 INFO [Dummy-31] [trace.py:128] - Task schedule.check_upgradable_plugin_task.check_upgradable_plugin_task[e68cd920-9019-4a8a-827c-2f0529b15705] succeeded in 0.04067472741007805s: None 2025-09-30 03:30:00.045 ERROR [Dummy-31] [init.py:156] - Failed to detach context Traceback (most recent call last): File "/app/api/.venv/lib/python3.12/site-packages/opentelemetry/context/init.py", line 154, in detach _RUNTIME_CONTEXT.detach(token) File "/app/api/.venv/lib/python3.12/site-packages/opentelemetry/context/contextvars_context.py", line 50, in detach self._current_context.reset(token) # type: ignore ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ TypeError: expected an instance of Token, got None ``` ### ✔️ Expected Behavior == ### ❌ Actual Behavior ==
yindo added the 🐞 bug label 2026-02-21 19:49:47 -05:00
yindo closed this issue 2026-02-21 19:49:47 -05:00
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Reference: langgenius/dify#18613
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