LibreChat 0.7.8 MongoDB long startup delay

[robertrd-gh]

What happened?

Hi LibreChat team,

We have been experiencing a 14-minute delay when connecting to our production MongoDB instance after upgrading from LibreChat 0.7.4 to LibreChat 0.7.8. Every time the application restarts, we get this message: "[Optional] IoRedis not initialized for rate limiters." Then the long delay happens, and after 14 minutes, we see the error: "An error occurred while fixing Token indexes: Operation tokens.indexes() buffering timed out after 10000ms".

Despite this, our app eventually does come up successfully, but the 14-minute delay is causing issues. Any ideas on what's going wrong or how we can fix this?

I'd like to note that we do not have Redis enabled and no data in the token cluster.

I have attached a screenshot of the error I am referring to - you can see the successful 'Connected to MongoDB' after 14 minutes from the last message "IoRedis not initialized.."

Version Information

N/A

Steps to Reproduce

N/A

What browsers are you seeing the problem on?

No response

Relevant log output

{
  "insertId": "tmn078j5f1smtf5b",
  "jsonPayload": {
    "message": "An error occurred while fixing Token indexes: Operation `tokens.indexes()` buffering timed out after 10000ms",
    "level": "error",
    "timestamp": "2025-07-28T21:50:56.559Z",
    "stack": "MongooseError: Operation `tokens.indexes()` buffering timed out after 10000ms\n    at Timeout.<anonymous> (/app/node_modules/mongoose/lib/drivers/node-mongodb-native/collection.js:187:23)\n    at listOnTimeout (node:internal/timers:581:17)\n    at process.pr..."
  }

Screenshots

No response

Code of Conduct

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

[danny-avila]

We have been experiencing a 14-minute delay

This is abnormal and can't be reproduced. As the error suggests, it is likely due to indexing of documents/fields that were not indexed before your upgrade.

It's possible to do indexing outside of the main application, and you will have to check the database collection schemas at the version you are updating to.

Since you are doing a large version bump, I would recommend upgrading to v0.7.9 instead of v0.7.8, which may have additional indexing in place and would be easier to guide you on how to index the appropriate collections.

[robertrd-gh]

Hi Danny,

Just an FYI -- we have no data in the token collection.

This error shows up in our non production environments as well, but not as consistently.

[xueshanf]

@danny-avila is it safe to drop the index that is causing the delay and restart LibreChat 0.7.8? We tested in non-prod, it seems okay, LibreChat created the index automatically. We don’t know if this would fix the delay in production because we were not able to reproduce the problem in non-prod, but seems no harm.