cep.fs.readFile error code 1

Hi All,

We are getting error while reading a file using cep fs library (cep.fs.readFile).

var file = window.cep.fs.readFile(path);
var errorCode = file.err;

errorCode value is 1. From the cep.fs library this error code belongs to "Unknown error". File is available at given location. What could be the possible scenarios which causes this error? How to troubleshoot this error?

Premiere Pro version: 11.1.0

Extension Type: Panel

Thanks & Regards,
Meet Tank