Internal WordPress error. Could not insert post into the database. | CyberSEO Pro | Support Forum

The issue is likely related to the WordPress environment or database, rather than the plugin itself. If the error occurs sporadically and only in certain situations, it points to factors outside of the plugin's control. For example, the database may have reached its table limits, such as running out of auto-increment IDs in the wp_posts table, or exceeding storage capacity in related tables such as wp_postmeta. Alternatively, the database may be corrupt, which would need to be repaired.

Another possibility is server limitations. If the generated post content is large, the MySQL max_allowed_packet size may be exceeded. Similarly, hosting-level restrictions such as database connection limits or timeout thresholds may be responsible. Encoding issues may also occur if the generated content contains unsupported characters such as emoticons, especially if the database uses utf8 instead of utf8mb4.

WordPress occasionally fails to complete transactions correctly, especially if other plugins or themes are interfering, or if the MySQL connection is unstable. This may result in an error like "Could not insert post into database".

You can use the WP-CLI to check the database status with wp db check and repair it if necessary with wp db repair. Enabling WordPress debugging by setting WP_DEBUG to true and reviewing the /wp-content/debug.log file may provide additional insight. If server-level issues are suspected, the user should check your MySQL configuration, specifically the max_allowed_packet value, and review web server and database error logs.

It is also recommended that you enable the Login to see this link option in the plugin settings. This feature ensures that the post content is cleaned before it is inserted into the database by checking for invalid UTF-8, converting special characters, removing potentially problematic tags such as <iframe> and <script>, and stripping unnecessary whitespace and octets. While this may remove certain embeds or scripts that were intentionally included in the content, it reduces the risk of database errors caused by unsupported characters or invalid HTML. Users who do not require such elements in their posts should consider enabling this option to improve stability.

It seems that the problem is more likely due to database corruption, server configuration, or hosting limitations than the code of the plugin, which has been used on thousands of sites for years without structural problems.