I’m seeing this as well. My IP has been blocked by my host a couple of times due to too many 404 errors:
www.REDACTED.com xxx.xxx.xxx.xxx - - [13/Feb/2024:07:42:14 -0500] "POST /wp-json/aioseo/v1/schema/validator/output/ HTTP/1.1" 404 1008 "https://www.REDACTED.com/wp-admin/post.php?post=3176&action=edit" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0"
www.REDACTED.com xxx.xxx.xxx.xxx - - [13/Feb/2024:07:42:17 -0500] "POST /wp-json/aioseo/v1/schema/validator/output/ HTTP/1.1" 404 1008 "https://www.REDACTED.com/wp-admin/post.php?post=3176&action=edit" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0"
www.REDACTED.com xxx.xxx.xxx.xxx - - [13/Feb/2024:07:42:19 -0500] "POST /wp-json/aioseo/v1/schema/validator/output/ HTTP/1.1" 404 1008 "https://www.REDACTED.com/wp-admin/post.php?post=3176&action=edit" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0"
www.REDACTED.com xxx.xxx.xxx.xxx - - [13/Feb/2024:07:42:19 -0500] "POST /wp-json/aioseo/v1/schema/validator/output/ HTTP/1.1" 404 1008 "https://www.REDACTED.com/wp-admin/post.php?post=3176&action=edit" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0"
www.REDACTED.com xxx.xxx.xxx.xxx - - [13/Feb/2024:07:42:19 -0500] "POST /wp-json/aioseo/v1/schema/validator/output/ HTTP/1.1" 404 1008 "https://www.REDACTED.com/wp-admin/post.php?post=3176&action=edit" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0"
www.REDACTED.com xxx.xxx.xxx.xxx - - [13/Feb/2024:07:42:20 -0500] "POST /wp-json/aioseo/v1/schema/validator/output/ HTTP/1.1" 404 1008 "https://www.REDACTED.com/wp-admin/post.php?post=3176&action=edit" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0"
www.REDACTED.com xxx.xxx.xxx.xxx - - [13/Feb/2024:07:42:22 -0500] "POST /wp-json/aioseo/v1/schema/validator/output/ HTTP/1.1" 404 1008 "https://www.REDACTED.com/wp-admin/post.php?post=3176&action=edit" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0"
www.REDACTED.com xxx.xxx.xxx.xxx - - [13/Feb/2024:07:42:23 -0500] "POST /wp-json/aioseo/v1/schema/validator/output/ HTTP/1.1" 404 1008 "https://www.REDACTED.com/wp-admin/post.php?post=3176&action=edit" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0"
www.REDACTED.com xxx.xxx.xxx.xxx - - [13/Feb/2024:07:42:24 -0500] "POST /wp-json/aioseo/v1/schema/validator/output/ HTTP/1.1" 404 1008 "https://www.REDACTED.com/wp-admin/post.php?post=3176&action=edit" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0"
www.REDACTED.com xxx.xxx.xxx.xxx - - [13/Feb/2024:07:42:25 -0500] "POST /wp-json/aioseo/v1/schema/validator/output/ HTTP/1.1" 404 1008 "https://www.REDACTED.com/wp-admin/post.php?post=3176&action=edit" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0"