Type error: implode(): Argument #2 ($array) must be of type ?array, string given

[xigu]

D:\www\cdirs\master>php think migrate:create Users

[think\exception\ThrowableError]
Type error: implode(): Argument #2 ($array) must be of type ?array, string given

Exception trace:
() at D:\www\cdirs\master\vendor\topthink\think-migration\phinx\src\Phinx\Util\Util.php:110
implode() at D:\www\cdirs\master\vendor\topthink\think-migration\phinx\src\Phinx\Util\Util.php:110
Phinx\Util\Util::mapClassNameToFileName() at D:\www\cdirs\master\vendor\topthink\think-migration\src\command\migrate\Create.php:65
think\migration\command\migrate\Create->execute() at D:\www\cdirs\master\thinkphp\library\think\console\Command.php:175
think\console\Command->run() at D:\www\cdirs\master\thinkphp\library\think\Console.php:675
think\Console->doRunCommand() at D:\www\cdirs\master\thinkphp\library\think\Console.php:261
think\Console->doRun() at D:\www\cdirs\master\thinkphp\library\think\Console.php:198
think\Console->run() at D:\www\cdirs\master\thinkphp\library\think\Console.php:115
think\Console::init() at D:\www\cdirs\master\think:20

"topthink/think-migration": "2.0.3"
public static function mapClassNameToFileName($className)
{
$arr = preg_split('/(?=[A-Z])/', $className);
unset($arr[0]); // remove the first element ('')
$fileName = static::getCurrentTimestamp() . '' . strtolower(implode( $arr,'')) . '.php';
return $fileName;
}
Change
public static function mapClassNameToFileName($className)
{
$arr = preg_split('/(?=[A-Z])/', $className);
unset($arr[0]); // remove the first element ('')
$fileName = static::getCurrentTimestamp() . '' . strtolower(implode( '',$arr)) . '.php';
return $fileName;
}