[BUG] Redis Backed Chat Memory Error - "Cannot read private member from an object whose class did not declare it"

[ezynda3]

Describe the bug
When using Redis Backed Memory Store in a Conversational QA Retriever Chain I get the following error:

TypeError: Cannot read private member from an object whose class did not declare it
    at __classPrivateFieldGet (/usr/local/lib/node_modules/flowise/node_modules/@redis/client/dist/lib/client/index.js:4:94)
    at get isReady [as isReady] (/usr/local/lib/node_modules/flowise/node_modules/@redis/client/dist/lib/client/index.js:86:16)
    at RedisChatMessageHistory.ensureReadiness (/usr/local/lib/node_modules/flowise/node_modules/langchain/dist/stores/message/redis.cjs:48:26)
    at RedisChatMessageHistory.getMessages (/usr/local/lib/node_modules/flowise/node_modules/langchain/dist/stores/message/redis.cjs:54:20)
    at BufferMemory.loadMemoryVariables (/usr/local/lib/node_modules/flowise/node_modules/langchain/dist/memory/buffer_memory.cjs:40:49)
    at ConversationalRetrievalQAChain.call (/usr/local/lib/node_modules/flowise/node_modules/langchain/dist/chains/base.cjs:80:49)
    at ConversationalRetrievalQAChain_Chains.run (/usr/local/lib/node_modules/flowise/node_modules/flowise-components/dist/nodes/chains/ConversationalRetrievalQAChain/ConversationalRetrievalQAChain.js:161:37)
    at App.processPrediction (/usr/local/lib/node_modules/flowise/dist/index.js:723:42)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async /usr/local/lib/node_modules/flowise/dist/index.js:427:13

To Reproduce
Steps to reproduce the behavior:

1. Go to Marketplace and choose "Conversational Retrieval QA Chain".
2. Click on 'Use Template'
3. Add a Redis Backed Chat Memory and plug it into the memory slot of the "Conversational Retrieval QA Chain" card.
4. Configure the redis card to point to a valid Redis instance.
5. Save
6. Run chat as normal and you will see an error.

Expected behavior
Chat should function normally without error.

Screenshots

Setup

• Installation docker on Portainer instance
• Flowise Version 1.2.16
• OS: Linux
• Browser Brave

[HenryHengZJ]

does it work if you use the conversation chain:

[ezynda3]

Yes. Works just fine there.

[magnum6actual]

I'm hitting this same error with redis with an OpenAI function agent. The odd thing - it works fine if I query from the Flowise UI. If it send a query via API, it throws the "Cannot read private member from an object whose class did not declare it".

[giquieu]

Hello, I have the same return.
Using the Flowise UI chat, there is feedback. If you use the API the error happens.

Here is flow:

Here is log:

2023-09-25 02:00:18 [ERROR]: [server]: Error: Cannot read private member from an object whose class did not declare it
TypeError: Cannot read private member from an object whose class did not declare it
    at __classPrivateFieldGet (./flowise/node_modules/@redis/client/dist/lib/client/index.js:4:94)
    at get isReady [as isReady] (./flowise/node_modules/@redis/client/dist/lib/client/index.js:86:16)
    at RedisChatMessageHistory.ensureReadiness (./flowise/node_modules/langchain/dist/stores/message/redis.cjs:57:26)
    at RedisChatMessageHistory.getMessages (./flowise/node_modules/langchain/dist/stores/message/redis.cjs:68:20)
    at BufferMemoryExtended.loadMemoryVariables (./flowise/node_modules/langchain/dist/memory/buffer_memory.cjs:59:49)

Any ideas to solve?

Thanks.

[aleksanterix]

Hello, I'm having the same problem with the Conversational Retrieval QA Chain.

[vijaykammili]

I have the same issue with the Conversational Retrieval QA Chain as well.

[vijaykammili]

@HenryHengZJ or @chungyau97 - Can you help fix this issue please?

[aleksanterix]

I personally used the "Upstash Redis backed chat memory" to resolve this issue. Please tag me if the issue with Redis backed chat memory gets resolved.

…

-- Aleksanteri Halonen Junior DevOps Engineer +358 50 463 0572 Avanio From: vijaykammili ***@***.***> Sent: perjantai 20. lokakuuta 2023 23.32 To: FlowiseAI/Flowise ***@***.***> Cc: Aleksanteri Halonen ***@***.***>; Comment ***@***.***> Subject: Re: [FlowiseAI/Flowise] [BUG] Redis Backed Chat Memory Error - "Cannot read private member from an object whose class did not declare it" (Issue #614) @HenryHengZJ<https://github.com/HenryHengZJ> or @chungyau97<https://github.com/chungyau97> - Can you help fix this issue please? - Reply to this email directly, view it on GitHub<#614 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/A32PKJQVV7XJBIQC7XJSQOTYALNS7AVCNFSM6AAAAAA2XCFOHKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTONZTGM2TOMZVGY>. You are receiving this because you commented.Message ID: ***@***.***>

[HenryHengZJ]

This PR will be fixing the issue - #1118

[vinodkiran]

Fixed in Release 1.3.9