backups: properly query backups

app/Repositories/Eloquent/BackupRepository.php

@@ -25,8 +25,10 @@ class BackupRepository extends EloquentRepository
         return $this->getBuilder()
             ->withTrashed()
             ->where('server_id', $server)
-            ->whereNull('completed_at')
-            ->orWhere('is_successful', '=', true)
+            ->where(function ($query) {
+                $query->whereNull('completed_at')
+                    ->orWhere('is_successful', '=', true);
+            })
             ->where('created_at', '>=', Carbon::now()->subSeconds($seconds)->toDateTimeString())
             ->get()
             ->toBase();

app/Services/Backups/InitiateBackupService.php

@@ -134,7 +134,10 @@ class InitiateBackupService
 
         // Check if the server has reached or exceeded its backup limit.
         // completed_at == null will cover any ongoing backups, while is_successful == true will cover any completed backups.
-        $successful = $server->backups()->whereNull('completed_at')->orWhere('is_successful', true);
+        $successful = $server->backups()->where(function ($query) {
+            $query->whereNull('completed_at')
+                ->orWhere('is_successful', true);
+        });
         if (!$server->backup_limit || $successful->count() >= $server->backup_limit) {
             // Do not allow the user to continue if this server is already at its limit and can't override.
             if (!$override || $server->backup_limit <= 0) {