I'm experiencing ERR_SPDY_PROTOCOL_ERROR when uploading a WordPress Theme. I had transferred the site to a new host and I think I had done everything all right. When uploading a theme, this is what comes up:

This site can’t be reached The webpage at https://mysitename.com/wp-admin/update.php?action=upload-theme might be temporarily down or it may have moved permanently to a new web address.


What could be the problem? How do I resolve it?

  • Can you try different browser? – gdarko Jun 2 '19 at 10:57
  • I tried using a different browser but still couldn't. Anyway, I found a way. I uploaded the theme straight into the file manager from the hosting cpanel. – WP Ridge Jun 2 '19 at 22:27

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