问无法在sqflite中创建其他表

EN

class DBConnector {
Future<Database> setDatabase() async {
var directory = await getApplicationDocumentsDirectory();
var path = join(directory.path, 'sddssd.db');
var database =
    await openDatabase(path, version:1, onCreate: _createDatabase);
return database;
}

Future<void> _createDatabase(Database database, int version) async {
String questionTableName = QuestionModel.KEY_QUESTION_TABLE_NAME;
String userTableName = UserModel.KEY_USER_TABLE_NAME;

String quesTableSql =
        "CREATE TABLE IF NOT EXISTS $questionTableName (id INTEGER PRIMARY KEY,question         VARCHAR(200),answer VARCHAR(200));";
String userTableSql =
       """CREATE TABLE IF NOT EXISTS $userTableName (uid INTEGER PRIMARY KEY,name   TEXT,email TEXT,password TEXT);""";
await database.execute(quesTableSql);
await database.execute(userTableSql);


}
}
Error :
Exception has occurred.
SqfliteDatabaseException (DatabaseException(no such table: User   (code 1 SQLITE_ERROR): , while compiling: INSERT INTO User (uid, name, email, password) VALUES (NULL, ?, ?, ?)) sql 'INSERT INTO User (uid, name, email, password) VALUES (NULL, ?, ?, ?)' args [f, e, s]})