diff --git a/docs/source/installation/client.md b/docs/source/installation/client.md
index f7a886525bad9cf6655b8a972f013b235455a4d9..fa24c558b324d7da3ce272e46aa13cdef20b59fc 100644
--- a/docs/source/installation/client.md
+++ b/docs/source/installation/client.md
@@ -20,3 +20,9 @@ You should now be ready to start the client.
 Try it by running `npm run start`.
 A web page should open where you can see the [login page](../user_manual/login.md).
 If you are using VS Code you can also start the client with the [task](../development/vscode.md) `start client`.
+
+## If there are any errors, please try this.
+```
+npm rm react react-dom
+npm i -s react react-dom
+```
\ No newline at end of file
diff --git a/server/README.md b/server/README.md
index 6e307e409bf29d4b2769d67308cbf3c7e80180ee..bb263188aab3252750ed07b34cced3f8d1d15446 100644
--- a/server/README.md
+++ b/server/README.md
@@ -39,6 +39,10 @@ Set-ExecutionPolicy Unrestricted -Scope Process
 
 # Install all the required packages into your virtual environment.
 pip install -r requirements.txt
+
+# If there are any errors, please try this.
+npm rm react react-dom
+npm i -s react react-dom
 ```
 
 ### Linux(Ubuntu)