WPShort Pixel Error in Widgets after WordPress Update

  • Resolved wpkum

    (@wpkum)


    3 years, 4 months ago

    Hi, I’ve updated WordPress today and noticed that WordPress changed the Widgets design on the backend. But I’m getting Shortpixel error as follows

    Warning: call_user_func_array() expects parameter 1 to be a valid callback, class ‘WPShortPixel’ does not have a method ‘headCSS’ in /home/customer/…../wp-includes/class-wp-hook.php on line 303

Viewing 16 replies (of 16 total)

  • @photocoen your issue is not related to the original posters issue. You should open a new support ticket. Although the message you are getting is clear – Swift Performance is not compatible with Short Pixel so you need to deactivate one of them.

Viewing 16 replies (of 16 total)
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