Hello everyone
then my problem with MySql was
this .
And it manifested itself in some pages of data entry, I solved it like this, in the file "system/settings.php" at about line 71 after the string below
$_database->query("SET NAMES 'utf8'");
i added another string, like this,
$_database->query("SET NAMES 'utf8'");
$_database->query("SET sql_mode = ''");
then I redone the same process at line 226, after the string below,
global $_mysql_querys;
i added another string, like this,
global $_mysql_querys;
$_database->query("SET sql_mode = ''");
doing it all to me, I had to do this because I do not have full access to the console of my MySql.
Sorry about my bad English.