From d78db4c23eaf622af797d6beffea6007df1471a5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9B=B9=E7=9C=9F=E7=8F=B2?= <823914102@qq.com>
Date: Wed, 13 Oct 2021 05:44:40 +0000
Subject: [PATCH] update web/README.md.

---
 web/README.md | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/web/README.md b/web/README.md
index d275b7c6..69d4eb29 100644
--- a/web/README.md
+++ b/web/README.md
@@ -189,3 +189,28 @@ tar xzf myems-web.tar.gz
 sudo rm -r /var/www/web
 sudo mv build  /var/www/web
 ```
+*   avoid 404 error while refreshing pages
+```bash
+cd /var/www/web
+sudo vi .htaccess
+```
+  Add a IfModule as below:
+```bash
+IfModule mod_rewrite.c>
+  RewriteEngine On
+  RewriteBase /
+  RewriteRule ^index\.html$ - [L]
+  RewriteCond %{REQUEST_FILENAME} !-f
+  RewriteCond %{REQUEST_FILENAME} !-d
+  RewriteRule . /index.html [L]
+</IfModule>
+```
+  Configure rewrite.load
+```bash
+cd /etc/apache2/mods-enabled/
+sudo vi rewrite.load
+```
+  Add content as below
+```bash
+LoadModule rewrite_module /usr/lib/apache2/modules/mod_rewrite.so
+```
\ No newline at end of file