Hi Jerome, let's tackle these issues one by one—shared hosting environments like OVH can have quirky configuration gotchas that don't pop up locally. Here's what I'd check for each problem:

1. 405 Method Not Allowed on POST /admin/login #

This is usually a routing or server configuration issue. Here are the most likely fixes:

• Check if your routes are properly cached for production
  Even though you ran route:clear, sometimes shared hosting has file permission issues that prevent the route cache from being updated correctly. Try running:

  php artisan route:cache
  

  Make sure your web server user has write permissions to the bootstrap/cache directory. OVH shared hosting often runs PHP as your user, but double-check permissions just in case.

• Verify your .htaccess is in the correct directory
  Since you split the public directory, ensure the .htaccess is in the root of your web access directory (www/ in your case). Also, confirm that mod_rewrite is enabled on OVH—you can check this by creating a phpinfo.php file with <?php phpinfo(); ?> and searching for mod_rewrite in the output.

• Check for OVH's default redirect rules
  OVH shared hosting sometimes adds its own .htaccess rules or redirects that interfere with Laravel's routing. Look for any additional .htaccess files in parent directories (like your home directory) that might be overriding your rules.

2. JavaScript Not Working (Show/Hide Password) #

This is almost always an asset loading issue. Let's fix this:

• Recompile and publish Filament assets for production
  Locally, you probably ran npm run build or php artisan filament:assets, but you need to make sure these assets are properly deployed and accessible in production. Run:

  npm run build
  php artisan filament:assets
  

  Then ensure the public/build directory is correctly uploaded to www/nomadcalc/build as you mentioned. Also, check the browser's dev tools (Network tab) to see if the JS/CSS files are returning 404 errors—if they are, adjust your asset URL configuration using the ASSET_URL environment variable to point to the correct path:

  ASSET_URL=https://your-domain.com/nomadcalc/build
  

• Check file permissions on assets
  Make sure all files in the build directory have readable permissions (usually 644 for files, 755 for directories). OVH might block access if permissions are too open or too restrictive.

3. 403 Forbidden When Accessing /admin After Login #

This points to a permission or middleware issue:

• Verify your Filament user has the correct permissions
  Even if you're logged in, your user might not have access to the Filament admin panel. Double-check that your user model implements the FilamentUser interface and returns true from the canAccessFilament() method:

  use Filament\Models\Contracts\FilamentUser;
  use Filament\Panel;
  
  class User extends Authenticatable implements FilamentUser
  {
      // ...
  
      public function canAccessFilament(Panel $panel): bool
      {
          // Replace with your actual access logic
          return str_ends_with($this->email, '@your-domain.com') || $this->is_admin;
      }
  }
  

• Check if CSRF tokens and session settings are correct
  Sometimes, in production, CSRF tokens can get mismatched if your SESSION_DOMAIN environment variable isn't set correctly. Make sure it matches your production domain:

  SESSION_DOMAIN=your-domain.com
  

  Also, ensure your APP_URL is set to the correct HTTPS URL:

  APP_URL=https://your-domain.com
  

• Check for OVH's security restrictions
  OVH shared hosting has built-in security modules (like ModSecurity) that might block certain requests. You can try disabling ModSecurity temporarily through your OVH control panel to see if that resolves the 403 error. If it does, you'll need to whitelist the /admin route in ModSecurity rules.

General Additional Checks #

• Clear OVH's server cache
  OVH shared hosting often caches static assets and even dynamic content. Go to your OVH control panel and clear any CDN or server-level caches—this can fix issues where old assets or route configurations are being served.

• Verify PHP version extensions
  Make sure all required PHP extensions for Laravel 11 and Filament are enabled on OVH. Check your phpinfo() output for extensions like mbstring, openssl, pdo_mysql, gd, and bcmath—missing extensions can cause unexpected behavior.

Hope these steps help you resolve the issues! Let me know if you need further clarification on any of these points.

备注：内容来源于stack exchange，提问作者jerome