Error on deleting file: path must be a string

Rocket.Chat Version: 0.56
Running Instances: docker
DB Replicaset OpLog: enabled
Node Version: 4.8.1

I have this error on deleting file in chat.

Exception in callback of async function: TypeError: path must be a string   
    at TypeError (native)   
    at Object.fs.stat (fs.js:830:11)   
    at LocalStore._this.delete (/app/bundle/programs/server/packages/jalik_ufs-local.js:156:20)   
    at Object.<anonymous> (/app/bundle/programs/server/packages/jalik_ufs.js:2070:28)   
    at packages/matb33_collection-hooks.js:558:28   
    at Array.forEach (native)   
    at Function._.each._.forEach (packages/underscore.js:139:11)   
    at packages/matb33_collection-hooks.js:557:11  
    at Array.forEach (native)   
    at Function._.each._.forEach (packages/underscore.js:139:11)   
    at Object.<anonymous> (packages/matb33_collection-hooks.js:556:9)   
    at Object.collection.(anonymous function) [as remove] (packages/matb33_collection-hooks.js:146:21)   
    at [object Object].remove (/app/bundle/programs/server/packages/mongo.js:3936:31)   
    at ModelsBaseDb.remove (/app/bundle/programs/server/packages/rocketchat_lib.js:9752:32)   
    at [object Object].model.remove (/app/bundle/programs/server/packages/rocketchat_lib.js:9405:24)   
    at /app/bundle/programs/server/packages/jalik_ufs-local.js:159:50   
    at runWithEnvironment (packages/meteor.js:1176:24)  

Start with the deletion stack trace in packages/jalik_ufs-local.js, especially LocalStore.delete and its fs.stat call, then inspect the surrounding collection removal flow in packages/jalik_ufs.js. Reproduce file deletion with the reported Docker, MongoDB replica-set, and Node versions if possible; done means deletion completes without the path TypeError and the relevant regression is covered.