diff --git a/src/Controller/DumpController.php b/src/Controller/DumpController.php
index e115b0f..702dae0 100644
--- a/src/Controller/DumpController.php
+++ b/src/Controller/DumpController.php
@@ -6,7 +6,8 @@ use AeonDumpManager\MessageQueue\Message\CreateDumpMessage;
 use AeonDumpManager\Service\DumpJobStatusService;
 use AeonDumpManager\Service\DumpLister;
 use AeonDumpManager\Service\DumpService;
-use Shopware\Core\Framework\Api\Route\ApiRouteScope;
+use AeonDumpManager\Service\Exception\DumpNotFoundException;
+use Shopware\Core\Framework\Routing\ApiRouteScope;
 use Shopware\Core\PlatformRequest;
 use Symfony\Component\HttpFoundation\JsonResponse;
 use Symfony\Component\HttpFoundation\Response;
@@ -67,7 +68,11 @@ class DumpController
     )]
     public function delete(string $filename): JsonResponse
     {
-        $this->dumpService->delete($filename);
+        try {
+            $this->dumpService->delete($filename);
+        } catch (DumpNotFoundException $exception) {
+            return new JsonResponse(['message' => $exception->getMessage()], Response::HTTP_NOT_FOUND);
+        }
 
         return new JsonResponse(null, Response::HTTP_NO_CONTENT);
     }
diff --git a/src/Resources/config/config.xml b/src/Resources/config/config.xml
index 42334d0..0de0cb8 100755
--- a/src/Resources/config/config.xml
+++ b/src/Resources/config/config.xml
@@ -6,12 +6,12 @@
     <card>
         <title>Minimal configuration</title>
 
-        <input-field type="number">
+        <input-field type="int">
             <name>maxDumps</name>
             <label>Maximum allowed dumps to exist</label>
             <defaultValue>6</defaultValue>
         </input-field>
-        <input-field type="number">
+        <input-field type="int">
             <name>retantionDays</name>
             <label>How many Days the dumps kept in the Storage. 0 Means unlimited</label>
             <defaultValue>0</defaultValue>
@@ -19,7 +19,6 @@
         <input-field type="text">
             <name>dumpBinaryName</name>
             <label>Name of the mysqldump/mariadb-dump binary to look up on PATH (e.g. if your distro renamed it). Leave empty to auto-detect.</label>
-            <defaultValue>""</defaultValue>
         </input-field>
     </card>
 
diff --git a/src/Resources/config/services.xml b/src/Resources/config/services.xml
index 3c6530a..1d8d433 100755
--- a/src/Resources/config/services.xml
+++ b/src/Resources/config/services.xml
@@ -5,81 +5,82 @@
            xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
 
     <services>
-
         <!-- Services -->
 
         <service id="Symfony\Component\Process\ExecutableFinder"/>
 
-        <service id="AeonDumpManager\Service\DumpFilenameParser"/>
+        <service id="aeon_dump_manager.dump_filename_parser" class="AeonDumpManager\Service\DumpFilenameParser"/>
 
-        <service id="AeonDumpManager\Service\DumpBinaryLocator">
+        <service id="aeon_dump_manager.dump_binary_locator" class="AeonDumpManager\Service\DumpBinaryLocator">
             <argument type="service" id="Doctrine\DBAL\Connection"/>
             <argument type="service" id="Shopware\Core\System\SystemConfig\SystemConfigService"/>
             <argument type="service" id="Symfony\Component\Process\ExecutableFinder"/>
         </service>
 
-        <service id="AeonDumpManager\Service\DumpJobStatusService">
+        <service id="aeon_dump_manager.dump_job_status_service" class="AeonDumpManager\Service\DumpJobStatusService">
             <argument type="service" id="Doctrine\DBAL\Connection"/>
         </service>
 
-        <service id="AeonDumpManager\Service\DumpLister">
+        <service id="aeon_dump_manager.dump_lister" class="AeonDumpManager\Service\DumpLister">
             <argument type="service" id="aeon_dump_manager.filesystem.private"/>
-            <argument type="service" id="AeonDumpManager\Service\DumpFilenameParser"/>
+            <argument type="service" id="aeon_dump_manager.dump_filename_parser"/>
         </service>
 
-        <service id="AeonDumpManager\Service\DumpService">
-            <argument type="service" id="AeonDumpManager\Service\DumpLister"/>
+        <service id="aeon_dump_manager.dump_service" class="AeonDumpManager\Service\DumpService">
+            <argument type="service" id="aeon_dump_manager.dump_lister"/>
             <argument type="service" id="aeon_dump_manager.filesystem.private"/>
-            <argument type="service" id="AeonDumpManager\Service\DumpBinaryLocator"/>
+            <argument type="service" id="aeon_dump_manager.dump_binary_locator"/>
             <argument type="service" id="Doctrine\DBAL\Connection"/>
             <argument type="service" id="Shopware\Core\System\SystemConfig\SystemConfigService"/>
-            <argument type="service" id="AeonDumpManager\Service\DumpFilenameParser"/>
+            <argument type="service" id="aeon_dump_manager.dump_filename_parser"/>
         </service>
 
         <!-- Async create job -->
 
-        <service id="AeonDumpManager\MessageQueue\Handler\CreateDumpHandler">
-            <argument type="service" id="AeonDumpManager\Service\DumpService"/>
-            <argument type="service" id="AeonDumpManager\Service\DumpJobStatusService"/>
+        <service id="aeon_dump_manager.message_queue.create_dump_handler" class="AeonDumpManager\MessageQueue\Handler\CreateDumpHandler">
+            <argument type="service" id="aeon_dump_manager.dump_service"/>
+            <argument type="service" id="aeon_dump_manager.dump_job_status_service"/>
+            <tag name="messenger.message_handler"/>
         </service>
 
         <!-- Retention -->
 
-        <service id="AeonDumpManager\ScheduledTask\PurgeDumpsTask">
+        <service id="aeon_dump_manager.scheduled_task.purge_dumps_task" class="AeonDumpManager\ScheduledTask\PurgeDumpsTask">
             <tag name="shopware.scheduled.task"/>
         </service>
 
-        <service id="AeonDumpManager\ScheduledTask\PurgeDumpsTaskHandler">
+        <service id="aeon_dump_manager.scheduled_task.purge_dumps_task_handler" class="AeonDumpManager\ScheduledTask\PurgeDumpsTaskHandler">
             <argument type="service" id="scheduled_task.repository"/>
             <argument type="service" id="logger"/>
-            <argument type="service" id="AeonDumpManager\Service\DumpService"/>
-            <argument type="service" id="AeonDumpManager\Service\DumpJobStatusService"/>
+            <argument type="service" id="aeon_dump_manager.dump_service"/>
+            <argument type="service" id="aeon_dump_manager.dump_job_status_service"/>
             <argument type="service" id="Shopware\Core\System\SystemConfig\SystemConfigService"/>
+            <tag name="messenger.message_handler" handles="AeonDumpManager\ScheduledTask\PurgeDumpsTask"/>
         </service>
 
         <!-- Console commands -->
 
-        <service id="AeonDumpManager\Command\DumpListCommand">
-            <argument type="service" id="AeonDumpManager\Service\DumpLister"/>
+        <service id="aeon_dump_manager.command.dump_list" class="AeonDumpManager\Command\DumpListCommand">
+            <argument type="service" id="aeon_dump_manager.dump_lister"/>
             <tag name="console.command"/>
         </service>
 
-        <service id="AeonDumpManager\Command\DumpCreateCommand">
-            <argument type="service" id="AeonDumpManager\Service\DumpService"/>
+        <service id="aeon_dump_manager.command.dump_create" class="AeonDumpManager\Command\DumpCreateCommand">
+            <argument type="service" id="aeon_dump_manager.dump_service"/>
             <tag name="console.command"/>
         </service>
 
-        <service id="AeonDumpManager\Command\DumpRemoveCommand">
-            <argument type="service" id="AeonDumpManager\Service\DumpService"/>
+        <service id="aeon_dump_manager.command.dump_remove" class="AeonDumpManager\Command\DumpRemoveCommand">
+            <argument type="service" id="aeon_dump_manager.dump_service"/>
             <tag name="console.command"/>
         </service>
 
         <!-- Admin API controller -->
 
         <service id="AeonDumpManager\Controller\DumpController" public="true">
-            <argument type="service" id="AeonDumpManager\Service\DumpLister"/>
-            <argument type="service" id="AeonDumpManager\Service\DumpService"/>
-            <argument type="service" id="AeonDumpManager\Service\DumpJobStatusService"/>
+            <argument type="service" id="aeon_dump_manager.dump_lister"/>
+            <argument type="service" id="aeon_dump_manager.dump_service"/>
+            <argument type="service" id="aeon_dump_manager.dump_job_status_service"/>
             <argument type="service" id="messenger.default_bus"/>
         </service>
 
diff --git a/src/Service/DumpBinaryLocator.php b/src/Service/DumpBinaryLocator.php
index 0027f63..7083d31 100644
--- a/src/Service/DumpBinaryLocator.php
+++ b/src/Service/DumpBinaryLocator.php
@@ -40,6 +40,9 @@ class DumpBinaryLocator
 
     private function isMariaDb(): bool
     {
-        return MySqlVariant::isMariaDb($this->connection->getServerVersion());
+        // Connection::getServerVersion() is private in the DBAL version this
+        // repo pins against — SELECT VERSION() is the stable public way to get
+        // the same string.
+        return MySqlVariant::isMariaDb((string) $this->connection->fetchOne('SELECT VERSION()'));
     }
 }