Fix PHP 8 support

composer.json

@@ -13,7 +13,6 @@
 		"ext-json": "*",
 		"ext-mbstring": "*",
 		"ext-openssl": "*",
-		"beyondcode/laravel-self-diagnosis": "^1.0",
 		"brick/math": "^0.8",
 		"buzz/laravel-h-captcha": "1.0.2",
 		"doctrine/dbal": "^2.7",
@@ -26,10 +25,10 @@
 		"laravel/horizon": "^5.0",
 		"laravel/passport": "^10.0",
 		"laravel/tinker": "^2.0",
-		"laravel/ui": "^2.0",
+		"laravel/ui": "^2.0|^3.4",
 		"league/flysystem-aws-s3-v3": "~1.0",
 		"league/flysystem-cached-adapter": "~1.0",
-		"league/iso3166": "^2.1",
+		"league/iso3166": "^2.1|^4.0",
 		"pbmedia/laravel-ffmpeg": "^7.0",
 		"phpseclib/phpseclib": "~2.0",
 		"bacon/bacon-qr-code": "^2.0.3",