Bump minimum PHP version to 8.1 and update packages

README.md

@@ -15,7 +15,7 @@ Please read the [CONTRIBUTING.md](CONTRIBUTING.md) and [DEVELOPMENT.md](DEVELOPM
 The Engelsystem may be installed manually or by using the provided [docker setup](#docker).
 
 ### Requirements
- * PHP >= 7.4
+ * PHP >= 8.1
    * Required modules:
      * dom
      * json

composer.json

@@ -19,7 +19,7 @@
         "phpstan": "phpstan"
     },
     "require": {
-        "php": ">=7.4.0",
+        "php": ">=8.1.0",
         "ext-json": "*",
         "ext-libxml": "*",
         "ext-mbstring": "*",

phpstan.neon.dist

@@ -1,5 +1,5 @@
 parameters:
-    phpVersion: 70400
+    phpVersion: 80100
     level: 1
     paths:
         - config

src/Controllers/ChecksArrivalsAndDepartures.php

@@ -42,6 +42,10 @@ trait ChecksArrivalsAndDepartures
             return true; // since optional value
         }
 
+        if (is_null($arrival_carbon)) {
+            return false; // Will be false any ways
+        }
+
         return $departure_carbon->greaterThanOrEqualTo($arrival_carbon) &&
             !$this->isBeforeBuildup($departure_carbon) && !$this->isAfterTeardown($departure_carbon);
     }