See the details here
Thank you. Link only shows the main component download not the extra plugins etc. I need the download to rebuild the site before migrating to j4. Whole thing got hosed.Try
Download Archive
Fabrik, is an open source application development, form and database management component.fabrikar.com
But you should disable all Fabrik before upgrading J! and installing F4.0.
So it should not matter if your Fabrik is the latest version.
https://fabrikar.com/forums/index.php?wiki/upgrade-instructions/