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Error: Failed to extract schema for "chat": TypeError: Cannot read properties of undefined (reading 'flags') #909

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benji56 opened this issue Feb 28, 2025 · 2 comments
Open

Error: Failed to extract schema for "chat": TypeError: Cannot read properties of undefined (reading 'flags') #909

benji56 opened this issue Feb 28, 2025 · 2 comments

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@benji56
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benji56 commented Feb 28, 2025 •
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what could cause this error?

"@langchain/community": "^0.3.33",
"@langchain/core": "^0.3.41",
"@langchain/langgraph": "^0.2.49",
"@langchain/openai": "^0.4.4",

info: ▪ <-- GET /assistants/eb6db400-e3c8-5d06-a834-015cb89efe69/schemas
Error: Failed to extract schema for "chat": TypeError: Cannot read properties of undefined (reading 'flags')
at getGraphSchema (file:///C:/Users/username/AppData/Local/npm-cache/_npx/8b41b8d3955bcda6/node_modules/@langchain/langgraph-api/dist/graph/load.mjs:68:19)
at async file:///C:/Users/username/AppData/Local/npm-cache/_npx/8b41b8d3955bcda6/node_modules/@langchain/langgraph-api/dist/api/assistants.mjs:90:25
at async dispatch (file:///C:/Users/username/AppData/Local/npm-cache/_npx/8b41b8d3955bcda6/node_modules/hono/dist/compose.js:22:17)
at async logger2 (file:///C:/Users/username/AppData/Local/npm-cache/_npx/8b41b8d3955bcda6/node_modules/hono/dist/middleware/logger/index.js:38:5)
at async dispatch (file:///C:/Users/username/AppData/Local/npm-cache/_npx/8b41b8d3955bcda6/node_modules/hono/dist/compose.js:22:17)
at async cors2 (file:///C:/Users/username/AppData/Local/npm-cache/_npx/8b41b8d3955bcda6/node_modules/hono/dist/middleware/cors/index.js:74:5)
at async dispatch (file:///C:/Users/username/AppData/Local/npm-cache/_npx/8b41b8d3955bcda6/node_modules/hono/dist/compose.js:22:17)
at async file:///C:/Users/username/AppData/Local/npm-cache/_npx/8b41b8d3955bcda6/node_modules/@langchain/langgraph-api/dist/server.mjs:26:5
at async dispatch (file:///C:/Users/username/AppData/Local/npm-cache/_npx/8b41b8d3955bcda6/node_modules/hono/dist/compose.js:22:17)
at async file:///C:/Users/username/AppData/Local/npm-cache/_npx/8b41b8d3955bcda6/node_modules/hono/dist/hono-base.js:195:25
info: ▪ --> GET /assistants/eb6db400-e3c8-5d06-a834-015cb89efe69/schemas 500 2s
@benji56
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benji56 commented Feb 28, 2025

It was resolved by porting my project to TypeScript.

@benji56 benji56 closed this as completed Feb 28, 2025
@benji56 benji56 reopened this Feb 28, 2025
@benji56
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benji56 commented Feb 28, 2025

Now that I've spent hours suffering with TypeScript, I'm not willing to torture myself any longer. Can someone explain why this doesn't work with plain JavaScript?

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