# Crew run fails due to "Received None or empty response from LLM call." when using Anthropic models

**URL:** <https://community.crewai.com/t/crew-run-fails-due-to-received-none-or-empty-response-from-llm-call-when-using-anthropic-models/3327>\
**Category:** CrewAI Community Support\
**Created:** [January 29, 2025, 7:22am UTC](https://community.crewai.com/t/crew-run-fails-due-to-received-none-or-empty-response-from-llm-call-when-using-anthropic-models/3327 "2025-01-29T07:22:20Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Manish\_I](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/manish_i/32/1370_2.png) [@Manish\_I](https://community.crewai.com/u/Manish_I)\
**Post date:** [January 29, 2025, 7:22am UTC](https://community.crewai.com/t/crew-run-fails-due-to-received-none-or-empty-response-from-llm-call-when-using-anthropic-models/3327/1 "2025-01-29T07:22:20Z")

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I’m working on building a coding team that includes both an architect and a coder. However, when the flow chain becomes longer, we encounter an error: “Received None or empty response from LLM call.” This issue happens more frequently when deployed on an AWS instance, while it occurs less often in a local environment.

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**Author:** ![saisujan08](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/saisujan08/32/2856_2.png) [@saisujan08](https://community.crewai.com/u/saisujan08)\
**Post date:** [June 29, 2025, 5:16pm UTC](https://community.crewai.com/t/crew-run-fails-due-to-received-none-or-empty-response-from-llm-call-when-using-anthropic-models/3327/2 "2025-06-29T17:16:00Z")

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Hey , were you able to resolve this error , I am facing this as well , tried everything unable to get it solved. Lmk if you found a solution

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**Author:** ![Manish\_I](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/manish_i/32/1370_2.png) [@Manish\_I](https://community.crewai.com/u/Manish_I)\
**Post date:** [June 29, 2025, 5:33pm UTC](https://community.crewai.com/t/crew-run-fails-due-to-received-none-or-empty-response-from-llm-call-when-using-anthropic-models/3327/3 "2025-06-29T17:33:24Z")

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I think I set  
use\_system\_prompt = False  
And it worked

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**Author:** ![saisujan08](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/saisujan08/32/2856_2.png) [@saisujan08](https://community.crewai.com/u/saisujan08)\
**Post date:** [June 29, 2025, 5:46pm UTC](https://community.crewai.com/t/crew-run-fails-due-to-received-none-or-empty-response-from-llm-call-when-using-anthropic-models/3327/4 "2025-06-29T17:46:27Z")

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Not working bro , same error persists.

Edit : Made it work. LLM’s through groq offer 6000 tokens only , therefore we need to ask the agent to keep the answer precise and short. Sometimes it might work sometimes it might exceed the limit, that’s when this error arrises.