Errors with WordPress 5.5

When I go to add/edit a post I’m getting the following errors. These started after updating WordPress to version 5.5. These errors disappear if I disable the Connections plugin.

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Notice: register_rest_route was called incorrectly. The REST API route definition for cn-api/v1/countries is missing the required permission_callback argument. For REST API routes that are intended to be public, use __return_true as the permission callback. Please see Debugging in WordPress for more information. (This message was added in version 5.5.0.) in /wp-includes/functions.php on line 5225

Notice: register_rest_route was called incorrectly. The REST API route definition for cn-api/v1/countries/(?P[a-z]{2,2}) is missing the required permission_callback argument. For REST API routes that are intended to be public, use __return_true as the permission callback. Please see Debugging in WordPress for more information. (This message was added in version 5.5.0.) in /wp-includes/functions.php on line 5225

Notice: register_rest_route was called incorrectly. The REST API route definition for cn-api/v1/countries/(?P[a-z]{2,2})/geojson is missing the required permission_callback argument. For REST API routes that are intended to be public, use __return_true as the permission callback. Please see Debugging in WordPress for more information. (This message was added in version 5.5.0.) in /wp-includes/functions.php on line 5225

Notice: register_rest_route was called incorrectly. The REST API route definition for cn-api/v1/countries/(?P[a-z]{2,2})/regions is missing the required permission_callback argument. For REST API routes that are intended to be public, use __return_true as the permission callback. Please see Debugging in WordPress for more information. (This message was added in version 5.5.0.) in /wp-includes/functions.php on line 5225

Notice: register_rest_route was called incorrectly. The REST API route definition for cn-api/v1/countries/(?P[a-z]{2,2})/region/(?P[0-9a-zA-Z]+) is missing the required permission_callback argument. For REST API routes that are intended to be public, use __return_true as the permission callback. Please see Debugging in WordPress for more information. (This message was added in version 5.5.0.) in /wp-includes/functions.php on line 5225

Notice: register_rest_route was called incorrectly. The REST API route definition for cn-api/v1/autocomplete/(?Pname|last_name|title|organization|department|district|county|city|state|zipcode|country) is missing the required permission_callback argument. For REST API routes that are intended to be public, use __return_true as the permission callback. Please see Debugging in WordPress for more information. (This message was added in version 5.5.0.) in /wp-includes/functions.php on line 5225