The SQLSTATE[HY000]: General error: 1366 Incorrect string value error typically occurs in MySQL (or MariaDB) when you try to insert or update data that includes characters that cannot be represented in the column's current character set or collation. This often happens when you're trying to insert special characters (such as emojis, accented letters, or non-Latin characters) into a column that doesn't support them.
but, maybe you write directly data base
Possible Causes:
Character Set Mismatch
Incorrect or Missing Collation
Client/Connection Character Set
Insert or Update Data with Unsupported Characters