> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wandb.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Inference

<Card title="How do I fix Invalid Authentication (401) errors with W&B Inference?" href="/support/models/articles/how-do-i-fix-invalid-authentication-401-" arrow="true" horizontal>
  A 401 Invalid Authentication error means your API key is invalid or your W\&B project entity/name is incorrect. Verify yo ...
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<Card title="How do I fix server errors (500, 503) with W&B Inference?" href="/support/models/articles/how-do-i-fix-server-errors-500-503-with-" arrow="true" horizontal>
  Server errors indicate temporary issues with the W\&B Inference service. Error types 500 - Internal Server Error Message: ...
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<Card title="What are the best practices for handling W&B Inference errors?" href="/support/models/articles/what-are-the-best-practices-for-handling" arrow="true" horizontal>
  Follow these best practices to handle W\&B Inference errors gracefully and maintain reliable applications. 1. Always impl ...
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<Card title="Why am I getting insufficient quota errors (402) with W&B Inference?" href="/support/models/articles/why-am-i-getting-insufficient-quota-erro" arrow="true" horizontal>
  Insufficient quota errors (402) occur when you do not have remaining credits in your plan. Error: "You exceeded your cur ...
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<Card title="Why am I getting rate limit errors (429) with W&B Inference?" href="/support/models/articles/why-am-i-getting-rate-limit-errors-429-w" arrow="true" horizontal>
  Rate limit errors (429) occur when you exceed concurrency limits. Error: "Concurrency limit reached for requests" Soluti ...
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