Where can I get a full list of wordpress errors in plain text?

Enable debug logging in wp-config.php:

define( 'WP_DEBUG', true ); // Enable debugging

// Default logging path is wp-content/debug.log
define( 'WP_DEBUG_LOG', true /* or custom path e.g. '/path/to/debug.log' */ );

define( 'WP_DEBUG_DISPLAY', true /* or false if you want to just log the errors */ );

That will capture and store all errors (either from core PHP, or generated by WordPress).