Updated doctrine recipes.

config/packages/doctrine.yaml

@@ -1,23 +1,11 @@
-parameters:
-    # Adds a fallback DATABASE_URL if the env var is not set.
-    # This allows you to run cache:warmup even if your
-    # environment variables are not available yet.
-    # You should not need to change this value.
-    env(DATABASE_URL): ''
-
 doctrine:
     dbal:
-        # configure these for your database server
-        # Doctrine should be able to detect these settings automatically, so just override them if you getting errors.
-        #driver: 'pdo_mysql'
-        #server_version: '5.6'
-
-        charset: utf8mb4
-        default_table_options:
-            charset: utf8mb4
-            collate: utf8mb4_unicode_ci
-
         url: '%env(resolve:DATABASE_URL)%'
+
+        # IMPORTANT: You MUST configure your server version,
+        # either here or in the DATABASE_URL env var (see .env file)
+        #server_version: '5.7'
+
         types:
             datetime:
                 class: App\Helpers\UTCDateTimeType