(node:19632) ExperimentalWarning: The fs.promises API is experimental Unexpected error

[bipsmartec]

An unexpected error occurred in converting a DOCX file from a PDF file.

1. Comand
   mpx convert 68222-247693-1-SM.pdf 68222-247693-1-SM.docx

2. Error Message
   (node:19632) ExperimentalWarning: The fs.promises API is experimental
   Unexpected error, please submit a bug report at: https://github.com/mathpix/mpx-cli/issues

3. About PDF file
   PDF file name is 68222-247693-1-SM.pdf.
   This PDF downloaded from https://www.ccsenet.org/journal/index.php/apr/article/view/68222.

4. About Node.js version
   v10.15.3