diff --git a/src/Http/Controllers/DashboardController.php b/src/Http/Controllers/DashboardController.php
index 024615e..d839567 100644
--- a/src/Http/Controllers/DashboardController.php
+++ b/src/Http/Controllers/DashboardController.php
@@ -107,8 +107,8 @@ protected function getDashboardStats(): array
             ->selectRaw("
                 SUM(COALESCE(db_query_count, 0)) as db_queries,
                 SUM(COALESCE(cache_hit_count, 0) + COALESCE(cache_miss_count, 0)) as cache_calls,
-                SUM(CASE WHEN http_calls IS NOT NULL AND http_calls != '[]' AND http_calls != 'null' THEN 1 ELSE 0 END) as http_calls,
-                SUM(CASE WHEN mail_calls IS NOT NULL AND mail_calls != '[]' AND mail_calls != 'null' THEN 1 ELSE 0 END) as mail_calls
+                SUM(CASE WHEN http_calls IS NOT NULL AND http_calls::text != '[]' AND http_calls::text != 'null' THEN 1 ELSE 0 END) as http_calls,
+                SUM(CASE WHEN mail_calls IS NOT NULL AND mail_calls::text != '[]' AND mail_calls::text != 'null' THEN 1 ELSE 0 END) as mail_calls
             ")
             ->first();
 
@@ -173,13 +173,13 @@ public function generatePrompt(string $id, AiPromptService $promptService): Json
 
     public function stats(): JsonResponse
     {
-        $stats = Trace::selectRaw('
+        $stats = Trace::selectRaw("
             count(*) as total,
-            count(case when status = "error" then 1 end) as failed,
-            count(case when status = "success" then 1 end) as success,
+            count(case when status = 'error' then 1 end) as failed,
+            count(case when status = 'success' then 1 end) as success,
             avg(duration_ms) as avg_duration,
             max(duration_ms) as slowest
-        ')->first();
+        ")->first();
 
         $today = Trace::whereDate('started_at', now()->today())->count();