more specificity on versions, some broke php 7.0 compatibility

composer.json

@@ -7,15 +7,15 @@
     "type": "project",
     "require": {
         "php": ">=7.0",
-        "laravel/framework": "5.4.*",
-        "barryvdh/laravel-ide-helper": "^2.1",
+        "laravel/framework": "v5.4.30",
+        "barryvdh/laravel-ide-helper": "v2.4.0",
         "yajra/laravel-datatables-oracle": "~6.0",
         "infyomlabs/laravel-generator": "dev-master",
         "laravelcollective/html": "5.4.x",
         "infyomlabs/adminlte-templates": "5.3.x-dev",
         "infyomlabs/swagger-generator": "dev-master",
         "jlapp/swaggervel": "dev-master",
-        "doctrine/dbal": "~2.3",
+        "doctrine/dbal": "v2.5.12",
         "zizaco/entrust": "5.2.x-dev",
         "prettus/l5-repository": "^2.6",
         "spatie/laravel-pjax": "^1.3",
@@ -25,7 +25,7 @@
         "anlutro/l4-settings": "^0.5.0",
         "webpatser/laravel-uuid": "^2.0",
         "chrisbjr/api-guard": "^4.0",
-        "spatie/laravel-fractal": "^4.01",
+        "spatie/laravel-fractal": "4.2.0",
         "composer/semver": "^1.4",
         "dg/rss-php": "^1.2"
     },