Migrating your site to Flywheel on your own is usually hassle-free (especially when using our plugin Flywheel Migrations), but what happens if you run into an error on the migrated site? In this help doc, we’ll walk you through the most common issues we see for migrations and show you how to fix them!
2. Fatal errors caused by plugins or themes
3. Images missing because of Jetpack
4. Images missing because of mismatch between HTTP and HTTPS
5. Styles missing because of theme or plugin caching
6. Styles missing because of minification caching
7. Incomplete database
8. Fonts not displaying due to DNS validation
9. Parse/syntax errors in plugins or themes
10.WP Rocket (or similar caching plugin) is active but WP_CACHE not enabled
11. Oops page when HTTPS is forced through site URLs, plugin, or theme code
12. Need to import theme options
Sometimes, plugins and themes that are out of date or not completely compatible with Flywheel can cause fatal errors on your site.
Symptoms: Unable to view the site or log into WordPress dashboard due to a white screen, critical error message, or fatal errors visible on the page.
Fix: Disable the theme or plugin that’s having trouble, then update or contact the developer for more information. For detailed steps, check out our handy help doc on troubleshooting fatal errors.
Symptoms: When viewing the migrated site, images are broken (not loading) and the image paths contain
wp.com in the image path when inspecting the images with browser dev tools. This is related to the Image Performance setting in Jetpack (aka image optimization, acceleration, CDN, Photon, etc.). This feature uses
wp.com as an image CDN, and is tied to the live site’s domain.
Fix: Log into the migrated site’s WordPress dashboard, go to Jetpack > Settings > Performance and turn off “Speed up image load times” (the wording may vary a bit depending on your Jetpack version, but look for something related to image performance or load time and turn it off).
If a page is loaded over HTTP, but images are pulled in over HTTPS, privacy mode may prevent the images from loading.
Symptoms: Images are broken on the migrated site. Viewing the images with browser dev tools shows HTTPS in the image path, but the page is loaded over HTTP. Additionally, you may see 401 errors in the Network tab of browser dev tools.
Fix: Use a search-and-replace plugin like Better Search Replace to either change all HTTP URLs to HTTPS, or change all HTTPS URLs to HTTP in your database. Be sure to use the full protocol and domain together in both the “search” and “replace” fields, like so: searching for
https://example.com and replacing with
http://example.com (or searching for
http://example.com and replacing with
Symptoms: Layout, colors, and/or other styles on the migrated site are missing or different from the live site.
Some common plugins and themes that include caching (but this is by no means an exhaustive list):
Fix: Check for caching in your theme and/or a caching plugin, clear that cache, then clear cache in your Flywheel dashboard. Even if your plugins or themes aren’t included in that help doc, if something seems to be cached and not being cleared, it’s best to double check the developer’s documentation to see if caching is included.
Symptoms: Similar to the issue above, layout, colors, and/or other styles may be missing on the migrated site, or may be different from the live site.
Fix: Clear cache in the minification plugin or in your theme, then clear cache in your Flywheel dashboard. If the issue continues, the minification plugin may not be compatible with Flywheel and may need to be deactivated.
Symptoms: Blank white page on the front of the migrated site, but no fatal errors in logs. Logging into the WordPress dashboard shows no plugins or themes (or only some of the plugins or themes) from the live site migrated over.
Fix: Use a plugin like BackWPup to get a fresh copy of the live site’s database and import that into the migrated site using the Database Manager. Finish up by using a search-and-replace plugin like Better Search Replace to change the live URL to the temp URL in the migrated site’s database.
Symptoms: Fonts look different on the migrated site and Network tab in browser dev tools shows 403 errors for the fonts that aren’t loading. This is because your new temporary domain on Flywheel is not authorized to access the font.
Fix: No action needed, once you’ve pointed DNS the issue should resolve itself. Alternatively, if the fonts must be loaded before pointing DNS, contact your font provider to register your Flywheel temporary domain with them.
Symptoms: Similar to fatal errors, may cause white screens and/or critical error messages on your site.
Fix: Disable the plugin or theme having trouble, updated and/or reach out to the developer to resolve the error.
Symptoms: WP Rocket (or a similar caching plugin) shows an error in the WordPress dashboard.
Fix: Head over to the site’s Advanced tab in your Flywheel dashboard and enable WP_CACHE.
Symptoms: When visiting the migrated site, you see a Flywheel Oops page and the URL in the browser is HTTPS.
https://example.comand replacing with
Symptoms: Theme colors (and/or possibly layout) look completely different on migrated site, but clearing cache doesn’t seem to help. Themes like The7 often lose some of their theme settings during migrations, but fortunately they also include an easy way to export and import those settings.
Fix: Export theme settings from live site and import into migrated site.
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