我已经发布了这个答案几十次(2)评论中有一个链接到一个与你的问题类似的问题。
请转到config/config.php并找到此变量
$config['index_page'] = 'index.php'确保它看起来像这样$config['index_page'] = '';
在同一个文件中找到$config['base_url'] = '';确保它看起来像这样
$config['base_url'] = 'http://ec2-174-129-44-226.compute-1.amazonaws.com/';
同样在核心文件夹(系统,应用程序所在的位置)中创建 .htaccess 文件并确保它看起来像这样
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /
    #Removes access to the system folder by users.
    #Additionally this will allow you to create a System.php controller,
    #previously this would not have been possible.
    #'system' can be replaced if you have renamed your system folder.
    RewriteCond %{REQUEST_URI} ^system.*
    RewriteRule ^(.*)$ /index.php?/$1 [L]
    #When your application folder isn't in the system folder
    #This snippet prevents user access to the application folder
    #Submitted by: Fabdrol
    #Rename 'application' to your applications folder name.
    RewriteCond %{REQUEST_URI} ^application.*
    RewriteRule ^(.*)$ /index.php?/$1 [L]
    #Checks to see if the user is attempting to access a valid file,
    #such as an image or css document, if this isn't true it sends the
    #request to index.php
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule>
<IfModule !mod_rewrite.c>
    # If we don't have mod_rewrite installed, all 404's
    # can be sent to index.php, and everything works as normal.
    # Submitted by: ElliotHaughin
    ErrorDocument 404 /index.php
</IfModule>