The version is still a work in progress and not fully tested!
material-ui v5 becoming stable with a beta on July 1st and being promoted as the version to use, we starting to support both version v4 and v5.
If you migrated to version 5 of
material-ui, simply install our prerelease version to access the new version that supports v5.
yarn add @material-table/core@next
npm install @material-table/core@next