EDIT: replyMessage changed to PushMessage

-const setKeywordsFlexMessage = require("../message/setKeywordsFlexMessage")
+const setKeywordsFlexMessage = require("../message/setKeywordsFlexMessage");
 
 const db = require("../../apis/database");
 
 const checkKeywords = (client, event) => {
-    db.getKeywordsByUserId(event.source.userId).then((keywords) => {
-        flexMessage = setKeywordsFlexMessage(keywords);
-        client.replyMessage(event.replyToken, flexMessage)
-    })
+  db.getKeywordsByUserId(event.source.userId).then((keywords) => {
+    flexMessage = setKeywordsFlexMessage(keywords);
+    client.pushMessage(event.source.userId, flexMessage);
+  });
 };
 
-module.exports = { checkKeywords };
\ No newline at end of file
+module.exports = { checkKeywords };