diff --git a/admin-client/src/components/AddCourse.jsx b/admin-client/src/components/AddCourse.jsx
index b1548f6..3215803 100644
--- a/admin-client/src/components/AddCourse.jsx
+++ b/admin-client/src/components/AddCourse.jsx
@@ -10,7 +10,7 @@ function AddCourse() {
     const [image, setImage] = useState("");
     const [price, setPrice] = useState(0)
 
-    return <div style={{display: "flex", justifyContent: "center", minHeight: "80vh", justifyContent: "center", flexDirection: "column"}}>
+    return <div style={{display: "flex", justifyContent: "center", minHeight: "80vh", flexDirection: "column"}}>
         <div style={{display: "flex", justifyContent: "center"}}>
             <Card varint={"outlined"} style={{width: 400, padding: 20, marginTop: 30, height: "100%"}}>
                 <TextField
diff --git a/admin-client/src/components/Signin.jsx b/admin-client/src/components/Signin.jsx
index 0d979e1..5634b00 100644
--- a/admin-client/src/components/Signin.jsx
+++ b/admin-client/src/components/Signin.jsx
@@ -3,6 +3,7 @@ import TextField from "@mui/material/TextField";
 import {Card, Typography} from "@mui/material";
 import {useState} from "react";
 import axios from "axios";
+import { BASE_URL } from "../config.js";
 import {useNavigate} from "react-router-dom";
 import {useSetRecoilState} from "recoil";
 import {userState} from "../store/atoms/user.js";
diff --git a/node_modules/.yarn-integrity b/node_modules/.yarn-integrity
index 20d6d48..f498cf6 100644
--- a/node_modules/.yarn-integrity
+++ b/node_modules/.yarn-integrity
@@ -1,6 +1,8 @@
 {
-  "systemParams": "darwin-arm64-108",
-  "modulesFolders": [],
+  "systemParams": "linux-x64-93",
+  "modulesFolders": [
+    "node_modules"
+  ],
   "flags": [],
   "linkedModules": [],
   "topLevelPatterns": [],
diff --git a/server/routes/admin.js b/server/routes/admin.js
index 30ee575..6688f3b 100644
--- a/server/routes/admin.js
+++ b/server/routes/admin.js
@@ -37,7 +37,7 @@ router.post('/signup', (req, res) => {
   });
   
   router.post('/login', async (req, res) => {
-    const { username, password } = req.headers;
+    const { username, password } = req.body;
     const admin = await Admin.findOne({ username, password });
     if (admin) {
       const token = jwt.sign({ username, role: 'admin' }, SECRET, { expiresIn: '1h' });
diff --git a/server/routes/user.js b/server/routes/user.js
index a38e05f..c17ed5d 100644
--- a/server/routes/user.js
+++ b/server/routes/user.js
@@ -17,7 +17,7 @@ const router = express.Router();
   });
   
   router.post('/login', async (req, res) => {
-    const { username, password } = req.headers;
+    const { username, password } = req.body;
     const user = await User.findOne({ username, password });
     if (user) {
       const token = jwt.sign({ username, role: 'user' }, SECRET, { expiresIn: '1h' });