Error: Cannot find module 'langchain/memory'

[mattmueller-stripe]

What happened?

Getting the following error while trying to bump up to v0.8.0-rc4 and run the Dockerfile.multi container.

LibreChat-API  | Error: Cannot find module 'langchain/memory'
LibreChat-API  | Require stack:
LibreChat-API  | - /app/api/app/clients/memory/summaryBuffer.js
LibreChat-API  | - /app/api/app/clients/memory/index.js
LibreChat-API  | - /app/api/app/clients/OpenAIClient.js
LibreChat-API  | - /app/api/server/services/Endpoints/azureAssistants/initialize.js
LibreChat-API  | - /app/api/server/services/Endpoints/azureAssistants/index.js
LibreChat-API  | - /app/api/server/middleware/buildEndpointOption.js
LibreChat-API  | - /app/api/server/middleware/index.js
LibreChat-API  | - /app/api/server/routes/accessPermissions.js
LibreChat-API  | - /app/api/server/routes/index.js
LibreChat-API  | - /app/api/server/index.js
LibreChat-API  |     at Module._resolveFilename (node:internal/modules/cjs/loader:1207:15)
LibreChat-API  |     at Module._resolveFilename (/app/node_modules/module-alias/index.js:49:29)
LibreChat-API  |     at Module._load (node:internal/modules/cjs/loader:1038:27)
LibreChat-API  |     at Module.require (node:internal/modules/cjs/loader:1289:19)
LibreChat-API  |     at require (node:internal/modules/helpers:182:18)
LibreChat-API  |     at Object.<anonymous> (/app/api/app/clients/memory/summaryBuffer.js:1:65)
LibreChat-API  |     at Module._compile (node:internal/modules/cjs/loader:1521:14)
LibreChat-API  |     at Module._extensions..js (node:internal/modules/cjs/loader:1623:10)
LibreChat-API  |     at Module.load (node:internal/modules/cjs/loader:1266:32)
LibreChat-API  |     at Module._load (node:internal/modules/cjs/loader:1091:12) {
LibreChat-API  |   code: 'MODULE_NOT_FOUND',
LibreChat-API  |   requireStack: [
LibreChat-API  |     '/app/api/app/clients/memory/summaryBuffer.js',
LibreChat-API  |     '/app/api/app/clients/memory/index.js',
LibreChat-API  |     '/app/api/app/clients/OpenAIClient.js',
LibreChat-API  |     '/app/api/server/services/Endpoints/azureAssistants/initialize.js',
LibreChat-API  |     '/app/api/server/services/Endpoints/azureAssistants/index.js',
LibreChat-API  |     '/app/api/server/middleware/buildEndpointOption.js',
LibreChat-API  |     '/app/api/server/middleware/index.js',
LibreChat-API  |     '/app/api/server/routes/accessPermissions.js',
LibreChat-API  |     '/app/api/server/routes/index.js',
LibreChat-API  |     '/app/api/server/index.js'
LibreChat-API  |   ]
LibreChat-API  | }
LibreChat-API  | 
LibreChat-API  | Node.js v20.19.5

Seems like it's missing an NPM install somewhere.

Version Information

librechat-api                      latest         a29b9475e901   33 minutes ago      1.27GB
llmproxy-v2-librechat              latest         68c12a21f44a   7 weeks ago         1.14GB
librechat/librechat                latest         4b245c18cc8e   2 months ago        1.11GB

Steps to Reproduce

Should be reproducible by running docker compose -f docker-compose.yml up --build

What browsers are you seeing the problem on?

No response

Relevant log output

LibreChat-API  | Error: Cannot find module 'langchain/memory'
LibreChat-API  | Require stack:
LibreChat-API  | - /app/api/app/clients/memory/summaryBuffer.js
LibreChat-API  | - /app/api/app/clients/memory/index.js
LibreChat-API  | - /app/api/app/clients/OpenAIClient.js
LibreChat-API  | - /app/api/server/services/Endpoints/azureAssistants/initialize.js
LibreChat-API  | - /app/api/server/services/Endpoints/azureAssistants/index.js
LibreChat-API  | - /app/api/server/middleware/buildEndpointOption.js
LibreChat-API  | - /app/api/server/middleware/index.js
LibreChat-API  | - /app/api/server/routes/accessPermissions.js
LibreChat-API  | - /app/api/server/routes/index.js
LibreChat-API  | - /app/api/server/index.js
LibreChat-API  |     at Module._resolveFilename (node:internal/modules/cjs/loader:1207:15)
LibreChat-API  |     at Module._resolveFilename (/app/node_modules/module-alias/index.js:49:29)
LibreChat-API  |     at Module._load (node:internal/modules/cjs/loader:1038:27)
LibreChat-API  |     at Module.require (node:internal/modules/cjs/loader:1289:19)
LibreChat-API  |     at require (node:internal/modules/helpers:182:18)
LibreChat-API  |     at Object.<anonymous> (/app/api/app/clients/memory/summaryBuffer.js:1:65)
LibreChat-API  |     at Module._compile (node:internal/modules/cjs/loader:1521:14)
LibreChat-API  |     at Module._extensions..js (node:internal/modules/cjs/loader:1623:10)
LibreChat-API  |     at Module.load (node:internal/modules/cjs/loader:1266:32)
LibreChat-API  |     at Module._load (node:internal/modules/cjs/loader:1091:12) {
LibreChat-API  |   code: 'MODULE_NOT_FOUND',
LibreChat-API  |   requireStack: [
LibreChat-API  |     '/app/api/app/clients/memory/summaryBuffer.js',
LibreChat-API  |     '/app/api/app/clients/memory/index.js',
LibreChat-API  |     '/app/api/app/clients/OpenAIClient.js',
LibreChat-API  |     '/app/api/server/services/Endpoints/azureAssistants/initialize.js',
LibreChat-API  |     '/app/api/server/services/Endpoints/azureAssistants/index.js',
LibreChat-API  |     '/app/api/server/middleware/buildEndpointOption.js',
LibreChat-API  |     '/app/api/server/middleware/index.js',
LibreChat-API  |     '/app/api/server/routes/accessPermissions.js',
LibreChat-API  |     '/app/api/server/routes/index.js',
LibreChat-API  |     '/app/api/server/index.js'
LibreChat-API  |   ]
LibreChat-API  | }
LibreChat-API  | 
LibreChat-API  | Node.js v20.19.5

Screenshots

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

[mattmueller-stripe]

I was able to fix this with the following:

cd api
npm install langchain

[danny-avila]

Not seeing this with the officially built images or building the Dockerfile.multi image myself, both on arm64 and x86_64.

This could happen as a result of merging package-lock files if you had changes from previously running npm install. Try doing a clean build with docker compose build --no-cache to ensure you're starting fresh without any cached layers that might have incomplete dependencies.

Also on a branch (like main branch) with no changes to the codebase to confirm.

[mattmueller-stripe]

Hey Danny, thanks for testing it out! I did get it working by reverting back to what's in main for package.json, package-lock.json and api/package.json.

I'm not super familiar with npm workspaces, but this does still feel like a bug though?

If the API relies on the langchain dependency, e.g.

LibreChat/api/app/clients/agents/CustomAgent/initializeCustomAgent.js

Lines 3 to 4 in 6738360

	const { AgentExecutor } = require('langchain/agents');
	const { LLMChain } = require('langchain/chains');

But there's no dependency in api/package.json:

LibreChat/api/package.json

Lines 36 to 127 in 6738360

	"dependencies": {
	"@anthropic-ai/sdk": "^0.52.0",
	"@aws-sdk/client-s3": "^3.758.0",
	"@aws-sdk/s3-request-presigner": "^3.758.0",
	"@azure/identity": "^4.7.0",
	"@azure/search-documents": "^12.0.0",
	"@azure/storage-blob": "^12.27.0",
	"@google/generative-ai": "^0.24.0",
	"@googleapis/youtube": "^20.0.0",
	"@keyv/redis": "^4.3.3",
	"@langchain/community": "^0.3.47",
	"@langchain/core": "^0.3.62",
	"@langchain/google-genai": "^0.2.13",
	"@langchain/google-vertexai": "^0.2.13",
	"@langchain/openai": "^0.5.18",
	"@langchain/textsplitters": "^0.1.0",
	"@librechat/agents": "^2.4.79",
	"@librechat/api": "*",
	"@librechat/data-schemas": "*",
	"@microsoft/microsoft-graph-client": "^3.0.7",
	"@modelcontextprotocol/sdk": "^1.17.1",
	"@node-saml/passport-saml": "^5.1.0",
	"@waylaidwanderer/fetch-event-source": "^3.0.1",
	"axios": "^1.12.1",
	"bcryptjs": "^2.4.3",
	"compression": "^1.8.1",
	"connect-redis": "^8.1.0",
	"cookie": "^0.7.2",
	"cookie-parser": "^1.4.7",
	"cors": "^2.8.5",
	"dedent": "^1.5.3",
	"dotenv": "^16.0.3",
	"eventsource": "^3.0.2",
	"express": "^4.21.2",
	"express-mongo-sanitize": "^2.2.0",
	"express-rate-limit": "^7.4.1",
	"express-session": "^1.18.2",
	"express-static-gzip": "^2.2.0",
	"file-type": "^18.7.0",
	"firebase": "^11.0.2",
	"form-data": "^4.0.4",
	"googleapis": "^126.0.1",
	"handlebars": "^4.7.7",
	"https-proxy-agent": "^7.0.6",
	"ioredis": "^5.3.2",
	"js-yaml": "^4.1.0",
	"jsonwebtoken": "^9.0.0",
	"jwks-rsa": "^3.2.0",
	"keyv": "^5.3.2",
	"keyv-file": "^5.1.2",
	"klona": "^2.0.6",
	"librechat-data-provider": "*",
	"lodash": "^4.17.21",
	"meilisearch": "^0.38.0",
	"memorystore": "^1.6.7",
	"mime": "^3.0.0",
	"module-alias": "^2.2.3",
	"mongoose": "^8.12.1",
	"multer": "^2.0.2",
	"nanoid": "^3.3.7",
	"node-fetch": "^2.7.0",
	"nodemailer": "^6.9.15",
	"ollama": "^0.5.0",
	"openai": "^5.10.1",
	"openid-client": "^6.5.0",
	"passport": "^0.6.0",
	"passport-apple": "^2.0.2",
	"passport-discord": "^0.1.4",
	"passport-facebook": "^3.0.0",
	"passport-github2": "^0.1.12",
	"passport-google-oauth20": "^2.0.0",
	"passport-jwt": "^4.0.1",
	"passport-ldapauth": "^3.0.1",
	"passport-local": "^1.0.0",
	"rate-limit-redis": "^4.2.0",
	"sharp": "^0.33.5",
	"tiktoken": "^1.0.15",
	"traverse": "^0.6.7",
	"ua-parser-js": "^1.0.36",
	"undici": "^7.10.0",
	"winston": "^3.11.0",
	"winston-daily-rotate-file": "^5.0.0",
	"youtube-transcript": "^1.2.1",
	"zod": "^3.22.4"
	},
	"devDependencies": {
	"jest": "^29.7.0",
	"mongodb-memory-server": "^10.1.4",
	"nodemon": "^3.0.3",
	"supertest": "^7.1.0"
	}
	}

Aren't we implicitly relying on another dependency like @langchain/core to bring that dependency?