Problem

Six rules pass the raw value into Str methods that declare a string
parameter. Since Str.php is under strict_types=1, a non-string value
raises a TypeError instead of failing validation.

$factory->make(['code' => 123], ['code' => 'string|uppercase'])->fails();

// TypeError: Hyperf\Stringable\Str::upper(): Argument #1 ($value)
// must be of type string, int given