Error: Call to a member function getTranslation() on null

I'm trying to migrate/rebuild my Drupal 7 site in Drupal 9. Started with an empty Drupal 9 site set to minimal rather than standard installation and used Migrate / Migrate Drupal / Migrate Drupal UI to upgrade the site. On the new, drupal 9 site, it looks like the content and content types came over (though I have not figured out/rebuilt Views, Contexts, or Taxonomies yet).

If I click on 'create new' for any of the content types, however, I receive the error message: The website encountered an unexpected error. Please try again later. Error: Call to a member function getTranslation() on null in Drupal\node\NodeViewBuilder::renderLinks() (line 100 of core/modules/node/src/NodeViewBuilder.php). This error happens with all content types, whether standard articles, basic pages, or any custom content types.

(not sure if this is related, but if I click 'create a new content type', I can create a new content type that shows up in list of content types, but when I click Save and Manage fields, it just shows me the Body field and never gives me the opportunity to add additional fields)

I do have composer and drush setup in PuTTY if those can help fix or troubleshoot. Would welcome any advice.