PDOException: SQLSTATE[22001]: String data, right truncated: 1406 Data too long for column 'field_message_rendered_subject_value

Users have not been able to post comments - receiving the generic "The Site has Encounters an Error. Please try again later" error.

The error recorded in the log is as follows:

PDOException: SQLSTATE[22001]: String data, right truncated: 1406 Data too long for column 'field_message_rendered_subject_value' at row 1: INSERT INTO {field_data_field_message_rendered_subject} (entity_type, entity_id, revision_id, bundle, delta, language, field_message_rendered_subject_value, field_message_rendered_subject_format) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6, :db_insert_placeholder_7); Array ( [:db_insert_placeholder_0] => message [:db_insert_placeholder_1] => 16 [:db_insert_placeholder_2] => 16 [:db_insert_placeholder_3] => comment_insert [:db_insert_placeholder_4] => 0 [:db_insert_placeholder_5] => und [:db_insert_placeholder_6] =>

Hello Someone,

First Name Last Name has commented on your post Node Title.

Cheers,
Message notify example robot

[:db_insert_placeholder_7] => ) in field_sql_storage_field_storage_write() (line 448 of /var/www/html/modules/field/modules/field_sql_storage/field_sql_storage.module).

Disabling the Message Notify Module cleared the error and allowed comments to be posted again.

The error looks to be attributed to the comment subject field length is not properly set.