Se agrego excel y pdf

composer.json

@@ -19,7 +19,9 @@
         "yiisoft/yii2-bootstrap4": "~2.0.0",
         "yiisoft/yii2-swiftmailer": "~2.0.0 || ~2.1.0",
         "firebase/php-jwt": "^5.4",
-        "ramsey/uuid": "^4.2"
+        "ramsey/uuid": "^4.2",
+        "mpdf/mpdf": "^8.2",
+        "phpoffice/phpspreadsheet": "^2.2"
     },
     "require-dev": {
         "yiisoft/yii2-debug": "~2.1.0",
@@ -77,7 +79,8 @@
         "psr-4": {
             "common\\": "modules/common",
             "v1\\": "modules/v1",
-            "pdf\\": "modules/pdf"
+            "pdf\\": "modules/pdf",
+            "excel\\": "modules/excel"
         }
     }
 }