Make sure storage dir exists

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "f156819228ed2fb10267af6b8dff264f",
+    "content-hash": "4b0e73e3609626e3f1b0e9f2efe8eae2",
     "packages": [
         {
             "name": "nesbot/carbon",
@@ -436,6 +436,8 @@
     "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
-    "platform": [],
+    "platform": {
+        "ext-json": "*"
+    },
     "platform-dev": []
 }