sfn client broken in AWS Lambda as of this morning

[diegodleon]

Attempting to use the sfn client to trigger an AWS function through an AWS Lambda suddenly started yielding out this error a few hours ago.

{
"errorType": "Runtime.ImportModuleError",
"errorMessage": "Error: Cannot find module 'fast-xml-parser'\nRequire stack:\n- /var/task/node_modules/@aws-sdk/core/dist-cjs/index.js\n- /var/task/node_modules/@aws-sdk/client-sfn/dist-cjs/auth/httpAuthSchemeProvider.js\n- /var/task/node_modules/@aws-sdk/client-sfn/dist-cjs/index.js\n- /var/task/src/handlers/csv-import.js\n- /var/runtime/index.mjs",
"stack": [
"Runtime.ImportModuleError: Error: Cannot find module 'fast-xml-parser'",
"Require stack:",
"- /var/task/node_modules/@aws-sdk/core/dist-cjs/index.js",
"- /var/task/node_modules/@aws-sdk/client-sfn/dist-cjs/auth/httpAuthSchemeProvider.js",
"- /var/task/node_modules/@aws-sdk/client-sfn/dist-cjs/index.js",
"- /var/task/src/handlers/csv-import.js",
"- /var/runtime/index.mjs",
" at _loadUserApp (file:///var/runtime/index.mjs:1087:17)",
" at async UserFunction.js.module.exports.load (file:///var/runtime/index.mjs:1119:21)",
" at async start (file:///var/runtime/index.mjs:1282:23)",
" at async file:///var/runtime/index.mjs:1288:1"
]
}

AWS Lambda is running on runtime NodeJs18.
Removing the sfn client code from the lambda allows the lambda to continue to execute with no issues.

[diegodleon]

I've tried the latest "@aws-sdk/client-sfn" and downgraded to the past major version "@aws-sdk/client-sfn": "^3.499.0", same issue remains.

Not sure yet if this is the Lambda runtime or something changed in the library.

[kuhe]

redirect to #5866

[github-actions[bot]]

Hello! Reopening this discussion to make it searchable.