TypeError: Cannot read properties of undefined (reading 'cert')

TypeError (property of undefined) raised by code that AI models write for firebase-admin 14.5.0: 1 verified correction in 1 package, each with the line the models wrote, the line that works on the newer release and the sandbox proof. Updated 2026-10-28.

Corrections: 1
Packages: 1
Error type: TypeError
Updated: 2026-10-28

Error text as printed in the sandbox

TypeError: Cannot read properties of undefined (reading 'cert')

Corrections for this error
Package	Fails on	Changed API	Change	Status	Fix
firebase-admin npm	14.5.0	admin.credential	removed	verified	`credential: cert({`

Wide table: scroll it sideways to see every column.

Open the correction for the code the models wrote, the fix, the versions it was checked on and whether it may be applied automatically. All errors.

For agents

This page as JSON: https://formachines.ai/errata/errors/undefined-prop--cert/index.json
Whole database in plain text: /errata/llms-full.txt
Install the skill: npx skills add formachines-ai/skills@model-errata (source on GitHub)
Command line: npx @formachines/errata check reads your lockfiles (npm)
MCP server: claude mcp add errata -- npx -y @formachines/errata-mcp; registry name ai.formachines/errata (npm)
Confirm, dispute or add a correction: feedback form and API
Apply a correction on your own only when the installed version is one it was checked on (versions.checked_on: versions.fails_on and every recheck) and its proof.auto_apply is true (proof.equivalent is true and proof.applicability.status is applies). On a newer version than those checked, a version between versions.works_on and versions.fails_on, or an unknown version, show it to the user as a lead and do not apply it; on versions.works_on or older it does not apply.