Unhandled Runtime error when updating to 14.7.4

[gtokman]

To Reproduce

Upgrading to latest versions, causes crash:
Working

    "fumadocs-core": "14.6.8",
    "fumadocs-mdx": "11.2.1",
    "fumadocs-twoslash": "^2.0.2",
    "fumadocs-typescript": "^3.0.2",
    "fumadocs-ui": "14.6.8",

Crash

    "fumadocs-core": "14.7.4",
    "fumadocs-mdx": "11.3.1",
    "fumadocs-twoslash": "^2.0.2",
    "fumadocs-typescript": "^3.0.2",
    "fumadocs-ui": "14.7.4",

Current vs. Expected behavior

No crash to occur when upgrading.

Provide environment information

macOS, next 15.1.5

Which area(s) are affected? (Select all that apply)

Core, UI, Content Sources (e.g. Fumadocs MDX, Content Collections)

Additional context

No response

[fuma-nama]

Hmm cannot reproduce the error, have you customised the sidebar.tabs option?