Hello,
It seems that some files haven't been copied (as symbolic links). Please try extracting the content of the package folder in the server directly, and check the files has correct rwx access.
Anyway, since phpdocx 4.5 the recommended conversion plugin is the one based on LibreOffice to get the best output (https://www.phpdocx.com/documentation/conversion-plugin/conversion-plugin-installation-and-set-up). We recommend you to install and configure the conversion plugin based on LibreOffice.
Regards.