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I have been working on a prompt flow QnA chatbot for a while now and it has been working well. Recently i redeployed my model with minor changes and the endpoint does not work anymore: below is the error that i have : "Execution failure in 'lookup': (TypeError) unsupported operand type(s) for +: 'NoneType' and 'int' azure". Keep in mind that i haven't changed anything in the "lookup" node, and i couldn't find where the + operand is being done on the flow.
The prompt flow model works well in azure ML studio but deploying somehow makes this error.
Thank you for your help ! It's kind of an urgent matter
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(278.4, 1%, 36%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EYM%3C/text%3E%3C/svg%3E)
Hello Oussama Chiboub,
Thanks for reaching out to us, could you please share which region you are working on?
Hello Yutong ! Thanks for the reply ! My Azure ML studio ressource is in Canada Central.
@YutongTie-MSFT Hello ! thanks for the reply ! My Azure ML studio is hosted in Canada Central
@YutongTie-MSFT FYI : this is the full error code :
result = context.invoke_tool(node, f, kwargs=kwargs)\n File "/azureml-envs/prompt-flow/runtime/lib/python3.9/site-packages/promptflow/_core/flow_execution_context.py", line 90, in invoke_tool\n result = self._invoke_tool_inner(node, f, kwargs)\n File "/azureml-envs/prompt-flow/runtime/lib/python3.9/site-packages/promptflow/_core/flow_execution_context.py", line 206, in _invoke_tool_inner\n raise ToolExecutionError(node_name=node_name, module=module) from e\n', 'innerException': {'type': 'TypeError', 'message': "unsupported operand type(s) for +: 'NoneType' and 'int'", 'stackTrace': 'Traceback (most recent call last):\n File "/azureml-envs/prompt-flow/runtime/lib/python3.9/site-packages/promptflow/_core/flow_execution_context.py", line 182, in _invoke_tool_inner\n return f(**kwargs)\n File "/azureml-envs/prompt-flow/runtime/lib/python3.9/site-packages/promptflow/tracing/_trace.py", line 561, in wrapped\n token_collector.collect_openai_tokens_for_parent_span(span)\n File "/azureml-envs/prompt-flow/runtime/lib/python3.9/site-packages/promptflow/tracing/_trace.py", line 143, in collect_openai_tokens_for_parent_span\n merged_tokens = {\n File "/azureml-envs/prompt-flow/runtime/lib/python3.9/site-packages/promptflow/tracing/_trace.py", line 144, in <dictcomp>\n key: self._span_id_to_tokens[parent_span_id].get(key, 0) + tokens.get(key, 0)\n', 'innerException': None}}}
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(249.60000000000002, 42%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMK%3C/text%3E%3C/svg%3E)
I'm experiencing the same issue where everything worked fine while in prompt flow or playground but once deployed - same error as post author.
Prompt flow and everything was setup based on MS Learn activity (https://microsoftlearning.github.io/mslearn-ai-studio/Instructions/04-Use-own-data.html)
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(304, 85%, 39%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMW%3C/text%3E%3C/svg%3E)
The same is in Sweden Central. I made a everything by the book and the same issue.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(118.4, 15%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EE%3C/text%3E%3C/svg%3E)
A temporary fix for me was to disable tracing:
os.environ['PF_DISABLE_TRACING'] = 'true'
Hello everyone,
Thanks for reporting this issue, product team has acknowledged this issue and working on a fix. Will update here again if the issue has any progress.
Regards,
Yutong
-Please kindly accept the answer if you feel helpful to support the community, thanks a lot.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(236.8, 66%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDC%3C/text%3E%3C/svg%3E)
I have the same problem and today I have a demo with an important customer. Any news regards to when this issue will be solved ?
Team is working on a fix, at this moment, please try the workaround to disable tracing and redeploy the flow by setting the env var "PF_DISABLE_TRACING" to true, this can avoid the potential error at this time.
I hope this helps.
A temporary fix for me was to turn of tracing by setting an env variable:
os.environ['PF_DISABLE_TRACING'] = 'true'
Where can I set this variable ?
I have a python node in my flow where I can set it. If you dont have any python nodes you need to set it in your environment configuration. I guess either in an image or your flow.dag.yaml file
Yes I have, so I can try on the first python node of the flow cause it's always run
It worked for me, thank you.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(265.6, 99%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMA%3C/text%3E%3C/svg%3E)
Thank you, it worked for me!
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(112.00000000000001, 57.00000000000001%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ES%3C/text%3E%3C/svg%3E)
error:
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/azureml-envs/prompt-flow/runtime/lib/python3.9/site-packages/promptflow/_core/flow_execution_context.py", line 90, in invoke_tool
result = self._invoke_tool_inner(node, f, kwargs)
File "/azureml-envs/prompt-flow/runtime/lib/python3.9/site-packages/promptflow/_core/flow_execution_context.py", line 206, in _invoke_tool_inner
raise ToolExecutionError(node_name=node_name, module=module) from e
promptflow._core._errors.ToolExecutionError: Execution failure in 'opportunities': (TypeError) unsupported operand type(s) for +: 'NoneType' and 'NoneType'
2024-09-30 04:39:01 +0000 22 execution.flow WARNING Failed to calculate metrics due to exception: unsupported operand type(s) for +: 'int' and 'NoneType'.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(25.6, 49%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EKK%3C/text%3E%3C/svg%3E)
I have the same problem in Germany West Central, the error is:
{"error":{"code":"UserError","message":"Execution failure in 'answer_the_question_with_context': (TypeError) unsupported operand type(s) for +: 'int' and 'NoneType'"}}
Promptflow playground works fine and endpoint does not.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(185.6, 56.00000000000001%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ENK%3C/text%3E%3C/svg%3E)
We have the same issue. The location of search is centralsweden and ml workspace is on westeurope. Hope, the teams fixes the issue globally.
I have encountered the same problem in norwayeast
Hi everyone ! I found a fix pour this error : Apparently latest open ai versions cause a problem with prompt flow tracing, so reverting to = < 1.44.1 openai python library in the requirements file fixed the issue for me