Blank screen on /chat and /with-terms-and-retrieval

[janacm]

Seeing blank screens on /chat and /chat/with-terms-and-retrieval.

Seeing hydration errors in console:

chunk-ZQTY7F4A.js?v=551b39ef:9491 Uncaught Error: Hydration failed because the initial UI does not match what was rendered on the server.
    at throwOnHydrationMismatch (chunk-ZQTY7F4A.js?v=551b39ef:9491:17)
    at tryToClaimNextHydratableInstance (chunk-ZQTY7F4A.js?v=551b39ef:9512:15)
    at updateHostComponent (chunk-ZQTY7F4A.js?v=551b39ef:14789:13)
    at beginWork (chunk-ZQTY7F4A.js?v=551b39ef:15923:22)
    at beginWork$1 (chunk-ZQTY7F4A.js?v=551b39ef:19749:22)
    at performUnitOfWork (chunk-ZQTY7F4A.js?v=551b39ef:19194:20)
    at workLoopConcurrent (chunk-ZQTY7F4A.js?v=551b39ef:19185:13)
    at renderRootConcurrent (chunk-ZQTY7F4A.js?v=551b39ef:19160:15)
    at performConcurrentWorkOnRoot (chunk-ZQTY7F4A.js?v=551b39ef:18674:46)
    at workLoop (chunk-ZQTY7F4A.js?v=551b39ef:197:42)

chunk-ZQTY7F4A.js?v=551b39ef:14755 Uncaught Error: There was an error while hydrating. Because the error happened outside of a Suspense boundary, the entire root will switch to client rendering.
    at updateHostRoot (chunk-ZQTY7F4A.js?v=551b39ef:14755:65)
    at beginWork (chunk-ZQTY7F4A.js?v=551b39ef:15921:22)
    at beginWork$1 (chunk-ZQTY7F4A.js?v=551b39ef:19749:22)
    at performUnitOfWork (chunk-ZQTY7F4A.js?v=551b39ef:19194:20)
    at workLoopSync (chunk-ZQTY7F4A.js?v=551b39ef:19133:13)
    at renderRootSync (chunk-ZQTY7F4A.js?v=551b39ef:19112:15)
    at recoverFromConcurrentError (chunk-ZQTY7F4A.js?v=551b39ef:18732:28)
    at performConcurrentWorkOnRoot (chunk-ZQTY7F4A.js?v=551b39ef:18680:30)
    at workLoop (chunk-ZQTY7F4A.js?v=551b39ef:197:42)
    at flushWork (chunk-ZQTY7F4A.js?v=551b39ef:176:22)

[dwcarr]

Cannot reproduce. Must be a semver issue or something. I will try rolling the remix version forward and see if I can run into this.

[dwcarr]

Ok, the blank screen issue was a css problem, it only showed up on XL screens.

I still can't produce any hydration issues, though. Those wouldn't stop it from functioning, usually, anyway.

[janacm]

Ok, chat shows up now, but still unusable:

Getting an error after submitting the first prompt into the chat:

TypeError: Cannot read properties of null (reading 'length')
    at new AIMessage (file:///C:/Users/janac/Documents/GitHub/remix-simple-chat/node_modules/@langchain/core/dist/messages/ai.js:33:30)
    at openAIResponseToChatMessage (file:///C:/Users/janac/Documents/GitHub/remix-simple-chat/node_modules/@langchain/openai/dist/chat_models.js:61:20)
    at ChatDeepInfra._generate (file:///C:/Users/janac/Documents/GitHub/remix-simple-chat/node_modules/@langchain/openai/dist/chat_models.js:637:30)
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
    at async Promise.allSettled (index 0)
    at async ChatDeepInfra._generateUncached (file:///C:/Users/janac/Documents/GitHub/remix-simple-chat/node_modules/@langchain/core/dist/language_models/chat_models.js:114:25)
    at async ChatDeepInfra.invoke (file:///C:/Users/janac/Documents/GitHub/remix-simple-chat/node_modules/@langchain/core/dist/language_models/chat_models.js:50:24)
    at async RunnableSequence.invoke (file:///C:/Users/janac/Documents/GitHub/remix-simple-chat/node_modules/@langchain/core/dist/runnables/base.js:1055:33)
    at async chatAction (C:\Users\janac\Documents\GitHub\remix-simple-chat\app\routes\chat+\actions\chatAction.ts:68:20)

Looks like there's still some langchain remnants

[dwcarr]

ok. I will rip that out.
In the meantime, If you go into the package.json and take out the ^ on all of the langchain versions, followed by an npm i, then it might work. You might want to delete your node_modules before the npm i.

There may be other version conflicts still, but it's worth a try. Langchain is the worst in this regard. I will never look at them again until I at least see a version number that starts with >1.0.

[dwcarr]

Ok, I just pushed a version without langchain. Tests fine for me. (note that locally, it will sometimes have an error the first time it comes up, just refresh. I see that a lot, but deployed versions never has a problem).

I did not fix the portalChatAction and portalChatLoader yet, but the /chat and /chat/with-terms-and-retrieval routes are fully functional, sans langchain.

[dwcarr]

portalChatAction and portalChatLoader have now been updated.

Please test it out, and close the issue if things are looking good.