diff --git a/app/admin/router.py b/app/admin/router.py
index 93ef3c3..36b2d2f 100644
--- a/app/admin/router.py
+++ b/app/admin/router.py
@@ -53,7 +53,7 @@ async def dashboard(request: Request):
         )
         total_revenue = float((await session.execute(rev_stmt)).scalar_one())
 
-    logger.debug(
+    logger.info(
         "Dashboard data: users={}/{} tariffs={} servers={}/{} payments={}/{} revenue={}",
         active_users, total_users, total_tariffs,
         active_servers, total_servers,
diff --git a/app/main.py b/app/main.py
index a82717b..3db8f4f 100644
--- a/app/main.py
+++ b/app/main.py
@@ -62,11 +62,14 @@ async def validation_exception_handler(
     request: Request, exc: RequestValidationError
 ):
     logger.warning("Validation error: {}", exc.errors())
+    body = exc.body
+    if body is not None and not isinstance(body, (dict, list, str, int, float, bool, type(None))):
+        body = str(body)
     return JSONResponse(
         status_code=422,
         content={
             "detail": exc.errors(),
-            "body": exc.body,
+            "body": body,
         },
     )