TypeError! Unsupported operand types: string - int

[fiSCIENCES]

Hi,

strlen(static::$dirName-1)
should be:
strlen(static::$dirName)-1
in:
public static function Export(array $options = [])
{
...
if (static::$dirName[strlen(static::$dirName)-1] !== '/') {
static::$dirName .= '/';
}
...
}

Thank you.