TypeError [ERR_INVALID_CALLBACK]: Callback must be a function

Hi Vialink ! Thank you so much for the viacrypt. It have noticed the below error in my console whenever I try to read the encrypted message by opening the generated Single-use URL.

fs.js:137
    throw new ERR_INVALID_CALLBACK();
    ^

TypeError [ERR_INVALID_CALLBACK]: Callback must be a function
    at makeCallback (fs.js:137:11)
    at Object.unlink (fs.js:917:14)
    at /home/ec2-user/ProntoCrypt/prontocrypt/src/providers/fs.js:53:7
    at FSReqWrap.readFileAfterClose [as oncomplete] (internal/fs/read_file_context.js:53:3)

I am currently using the below versions in my machine.

node v10.11.0
npm v6.4.1
nvm v0.33.2

If you could please provide me the versions that are supported by this application that would be great.
Thanks again.