fix:(ApiController):learningEffectCheck

Modules/Admin/Http/Controllers/Api/ApiController.php

@@ -635,7 +635,7 @@ class ApiController extends BaseController
         foreach ($unitId_List as $unitIdVar) {
             if (isset($grouped[$unitIdVar])) {
                 $var1 = $grouped[$unitIdVar]; // 按uniqueBms顺序提取分组
-                $result[] += $this->dataProcessing($var1);
+                $result[] = $this->dataProcessing($var1);
             }
         }