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Blank and Broken Thumbnails

Hi there!

I'm experiencing from the past few days these problems:

The Media File library is full of blank thumbs, sometimes three or four thumbs are fine, next minute you visit the Library again and those are blank too and another is right. Clicking on an image in the Library opens the Attachment Details box but there's no image, but if you click Edit Image the image shows up. When uploading I can't see any of the uploaded images.

Same in Album pages: When uploading images to an Album I can't see any of the images uploaded, neither in the Uploading dialog nor the Album page, here the images appear with a broken icon.

In the Appearance > Customize>Header Settings>Logo menu I can't see the uploaded logos. When visiting the website everything works fine (all images are shown) but logo. Sometimes it is there and sometimes it is not. When Logo doesn't show on the website, I can't see it on the live customization neither.

Last month I had a problem with social icons not showing that ended being a problem with AdBlock in Firefox, since then the plugin is deactivated on the site. I've deactivated the Firefox Content Blocker but problems are still there. I get the same problem in Chrome. Both browsers give me a "Mixed Content: some parts of this page are insecure" warning.

The permissions of the upload folder in my server are OK (755), I've installed a plugin to force thumbs regeneration, I deactivated all plugins but nothing has worked.

I attach some screenshots in a zip of the problem.

Thank you for your time!
Captura de pantalla 2019-01-10


  • AirAir
    Posts: 10,000
    Hey :-)

    From your screenshots, I believe it could be an issue with "https", as when using https, browsers are blocking "http" resources like images and scripts.

    I would need to take a look my self to tell something more.

    Could you please send me temporary access to your WordPress so I could check there what is going on? Send it here on the forum via private message(click on my nick, in top-right corner you will find option "Message"). In message please add LINK to topic it applies to.

    By sending access to WordPress I mean:
    -create a new ADMIN account with a fake e-mail
    -set some password to this account
    -send me created login and password

    With kind regards.
  • AirAir
    Posts: 10,000
    Hey :-)

    Like I have said it is HTTPS based issue.

    I see your site works now only on https, so you should change your basic addresses in from http to https.

    Both in Site Address (URL) and WordPress Address (URL).

    After the above change, if you don't see images in some places, like the logo, for example, reselect it and save settings.

    Generally, after moving your site from http to https it is a good idea to rewrite all places in a database like explained here for example

    With kind regards.
  • Thank you very much for your help!
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