Version 67 is not just a routine maintenance patch. According to the official changelog and user reports, this version introduces several important refinements. If you are coming from an older version (e.g., version 6.x or early 7.x), here is what you can expect.
Clear your browser cache and WordPress cache (if using a caching plugin like WP Rocket or W3 Total Cache). Then try the export again. Also, check your browser’s console (F12 → Console tab) for JavaScript errors. download version 67 of the allinone wp migration plugin new