What this error means

[Bug]: UI Crash: RangeError: Maximum call stack size exceeded in unfurlWildcardModelsInList is a LiteLLM failure pattern reported for developers trying to litellm dashboard ui completely crashes when rendering wildcard model lists; infinite recursion in frontend model list expansion function; blocks admin management of proxy models. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

GitHub issue #28446 on BerriAI/litellm opened May 21, 2026 by showmikb. Label: ui-dashboard + bug. The crash occurs in the frontend JavaScript when expanding wildcard model patterns (e.g., 'gpt-*') into concrete model names. If many wildcards are configured, recursive unfurling exhausts JS call stack. Directly affects teams managing LiteLLM proxy deployments. Category: LiteLLM (direct mapping).

Common causes

  • GitHub issue #28446 on BerriAI/litellm opened May 21, 2026 by showmikb. Label: ui-dashboard + bug. The crash occurs in the frontend JavaScript when expanding wildcard model patterns (e.g., 'gpt-*') into concrete model names. If many wildcards are configured, recursive unfurling exhausts JS call stack. Directly affects teams managing LiteLLM proxy deployments. Category: LiteLLM (direct mapping).

Quick fixes

  1. Confirm the exact error signature matches [Bug]: UI Crash: RangeError: Maximum call stack size exceeded in unfurlWildcardModelsInList.
  2. Check the LiteLLM account, local tool state, and provider configuration involved in the failing workflow.
  3. Compare the failing environment with a known working setup, then change one configuration value at a time.

Platform/tool-specific checks

  • Verify the command, editor, extension, or API client that produced the error.
  • Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
  • Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

  1. Capture the exact error message and the command, editor action, or request that triggered it.
  2. Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
  3. Review the source evidence below and compare it with your environment.
  4. Apply one change at a time and rerun the smallest failing action.
  5. Keep the working fix documented for the team or deployment environment.

How to prevent it

  • Keep provider/tool configuration documented.
  • Record non-secret diagnostics such as tool version, provider name, model name, and command path.
  • Add a lightweight check before CI or production workflows depend on the tool.