500 error on page updates

i’m seeing this error on updates to any page (ones that have no “TEC” on them, e.g. standard pages). They worked on create, but on update I get a 500 error.

wp 5.7.1, ubuntu 20.04, php 8.0

This is the error, it comes from

POST https://www.agilicus.com/wp-json/wp/v2/pages/117?_locale=user 500

the error is

code: "rest_meta_database_error", message: "Could not delete meta value from database.",…}
code: "rest_meta_database_error"
data: {key: "_EventOrganizerID", status: 500}
message: "Could not delete meta value from database."

+------------------------------------------+----------+------------------------------+---------+
| name                                     | status   | update                       | version |
+------------------------------------------+----------+------------------------------+---------+
| akismet                                  | active   | none                         | 4.1.9   |
| allow-webp-image                         | active   | none                         | 1.0.0   |
| powerpress                               | active   | none                         | 8.5.3   |
| cc-child-pages                           | active   | none                         | 1.39    |
| code-syntax-block                        | active   | none                         | 2.0.2   |
| yikes-inc-easy-mailchimp-extender        | active   | none                         | 6.8.3   |
| yikes-inc-easy-mailchimp-popup-extension | active   | none                         | 1.3.3   |
| event-tickets                            | active   | none                         | 5.1.1   |
| fast-velocity-minify                     | active   | none                         | 3.1.4   |
| featured-images-for-rss-feeds            | active   | none                         | 1.5.7   |
| gutenberg                                | active   | none                         | 10.2.1  |
| illustrations                            | active   | none                         | 1.0.2   |
| jsonfeed                                 | active   | none                         | 1.4.1   |
| lazy-load-for-videos                     | active   | none                         | 2.13.0  |
| wp-nested-pages                          | active   | none                         | 3.1.13  |
| neve-pro-addon                           | active   | none                         | 1.4.3   |
| post-to-google-my-business               | active   | none                         | 2.2.34  |
| redirection                              | active   | none                         | 5.0.1   |
| wp-scheduled-posts                       | active   | none                         | 4.0.2   |
| slb-handler-video                        | inactive | none                         | 0.2.1   |
| simply-gallery-block                     | active   | available                    | 2.0.0   |
| google-site-kit                          | active   | none                         | 1.28.0  |
| smtp-mailer                              | active   | none                         | 1.1.1   |
| super-progressive-web-apps               | active   | none                         | 2.1.8   |
| svg-support                              | active   | version higher than expected | 3.0.0   |
| the-events-calendar                      | active   | none                         | 5.4.0.2 |
| the-paste                                | active   | none                         | 1.0.7   |
| ultimate-addons-for-gutenberg            | active   | none                         | 1.21.1  |
| webpushr-web-push-notifications          | active   | none                         | 4.23.0  |
| wp-agilicus-login                        | active   | none                         | 3.5.0   |
| wp-polls                                 | active   | none                         | 2.75.6  |
| wp-stateless                             | active   | none                         | 3.1.1   |
| wpcal                                    | active   | none                         | 0.9.4.4 |
| wp-post-series                           | active   | none                         | 2.0.0   |
| wp-super-cache                           | active   | none                         | 1.7.2   |
| wp-to-twitter                            | active   | none                         | 3.5.2   |
| duplicate-post                           | active   | none                         | 4.1.1   |
| wordpress-seo                            | active   | none                         | 16.0.2  |
| wordpress-seo-premium                    | active   | none                         | 16.0.2  |
| advanced-cache.php                       | dropin   | none                         |         |
+------------------------------------------+----------+------------------------------+---------+