Can not delete users in 4.6.1

Description:

Can't delete user. Several "undefined" pop ups appearing.

Steps to reproduce:

1. Go to admin, users, select an active user ( several conversations, owner of some channels ... )
2. Try to delete

Expected behavior:

The user should be deleted

Actual behavior:

The user wont be deleted and log shows.

Exception in callback of async function: TypeError [ERR_INVALID_ARG_TYPE] [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string or an instance of Buffer or URL. Received undefined
    at Object.stat (fs.js:1083:10)
    at LocalStore.delete (packages/jalik:ufs-local/ufs-local.js:111:12)
    at Object.<anonymous> (packages/jalik:ufs/ufs-store.js:378:5)
    at packages/matb33:collection-hooks/remove.js:28:30
    at Array.forEach (<anonymous>)
    at packages/matb33:collection-hooks/remove.js:27:14
    at Array.forEach (<anonymous>)
    at Object.<anonymous> (packages/matb33:collection-hooks/remove.js:26:22)
    at Object.collection.<computed> [as remove] (packages/matb33:collection-hooks/collection-hooks.js:93:21)
    at ns.Collection.remove (packages/mongo/collection.js:653:31)
    at ns.Collection.Mongo.Collection.<computed> [as remove] (packages/dispatch_run-as-user.js:325:19)
    at packages/jalik:ufs-local/ufs-local.js:114:36
    at runWithEnvironment (packages/meteor.js:1320:24) {
  code: 'ERR_INVALID_ARG_TYPE'
}
Exception in callback of async function: TypeError [ERR_INVALID_ARG_TYPE] [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string or an instance of Buffer or URL. Received undefined
    at Object.stat (fs.js:1083:10)
    at LocalStore.delete (packages/jalik:ufs-local/ufs-local.js:111:12)
    at Object.<anonymous> (packages/jalik:ufs/ufs-store.js:378:5)
    at packages/matb33:collection-hooks/remove.js:28:30
    at Array.forEach (<anonymous>)
    at packages/matb33:collection-hooks/remove.js:27:14
    at Array.forEach (<anonymous>)
    at Object.<anonymous> (packages/matb33:collection-hooks/remove.js:26:22)
    at Object.collection.<computed> [as remove] (packages/matb33:collection-hooks/collection-hooks.js:93:21)
    at ns.Collection.remove (packages/mongo/collection.js:653:31)
    at ns.Collection.Mongo.Collection.<computed> [as remove] (packages/dispatch_run-as-user.js:325:19)
    at packages/jalik:ufs-local/ufs-local.js:114:36
    at runWithEnvironment (packages/meteor.js:1320:24) {
  code: 'ERR_INVALID_ARG_TYPE'
}

Server Setup Information:

• Version of Rocket.Chat Server: 4.6.1
• Deployment Method:docker
• Number of Running Instances: 3

Client Setup Information

Web Firefox

Start at packages/jalik:ufs-local/ufs-local.js, especially LocalStore.delete, and trace the removal flow through packages/jalik:ufs/ufs-store.js and the collection remove hooks shown in the stack trace. Reproduce deletion of an active user and verify that the user is removed without undefined-path errors or callback exceptions.