WordPress站点迁移后Visual Composer 5.4.5内容编码错误求助

Hey there, let's work through this frustrating issue you're having with Visual Composer not showing up when editing pages post-migration. I've troubleshooted similar problems multiple times, so here are actionable steps to get it working again:

• Regenerate VC's CSS/JS Cache
  Migration often changes your site's file paths, and VC's cached resources might still point to the old server. Head to the Visual Composer settings page in your WP admin (look for a dedicated "Visual Composer" menu or under Settings), then find the option to Clear Cache or Regenerate CSS/JS. Run this to refresh the resource paths.

• Verify Site URL Settings
  Double-check your site's core URL settings. Go to Settings > General in WP admin and confirm both WordPress Address (URL) and Site Address (URL) match your production server's domain. If you can't access the admin, add these lines to your wp-config.php file (replace with your actual domain):

  define('WP_HOME','https://your-production-domain.com');
  define('WP_SITEURL','https://your-production-domain.com');
  

• Update Old URL References in the Database
  Your database likely has leftover references to the old server's URL, which breaks VC's content loading. Use phpMyAdmin to run these SQL queries (replace old-domain.com and new-domain.com, and adjust the table prefix wp_ if yours is different—always backup your database first!):

  UPDATE wp_posts SET post_content = REPLACE(post_content, 'https://old-domain.com', 'https://new-domain.com');
  UPDATE wp_postmeta SET meta_value = REPLACE(meta_value, 'https://old-domain.com', 'https://new-domain.com');
  

• Reactivate Visual Composer
  Sometimes plugins get stuck in a broken state after migration. Go to Plugins in WP admin, deactivate Visual Composer, wait 10 seconds, then reactivate it. This triggers a fresh initialization of the plugin.

• Check Server File Permissions
  Ensure the wp-content/uploads/js_composer directory (where VC stores its generated assets) has proper permissions. Set directories to 755 and files to 644—incorrect permissions can prevent VC from loading necessary files.

• Test for Plugin Conflicts
  Disable all other plugins except Visual Composer, then try editing a page. If it works, re-enable plugins one by one to find the conflicting one. You might need to update that plugin or find an alternative.

• Reinstall Visual Composer
  If nothing else works, delete the wp-content/plugins/js_composer directory from your server, then upload a fresh copy of Visual Composer 5.4.5 (make sure it's a legitimate, uncorrupted file) and activate it. Migration can sometimes corrupt plugin files, so a fresh install fixes this.

内容的提问来源于stack exchange，提问作者Ketan