Jetpack and Customzer not Working after upgrade

Jetpack Dashboard and Setting not showing (just show the Wordpress logo) but Site Stats displays
Customizer shows the home page but the edit buttons don’t work and only option available is to change the Theme
Site Health Test show website OK
Jetpack Debug test show OK
All plugins are up to date and have done the deactivate Plugins in search for a culprit. All deactivated; Jetpack and Customizer remain non-functional.
Wordpress 5.4.1
PHP 7.3.2
Shapely 1.2.8
Using a Child Theme

Hey there

Can you please test the same problem on the default Wordpress theme? a temporary switch to the default Wordpress theme and check again, also, if its possible please lower version of PHP to ver 7.0

Hello Noda
Thanks for your reply.
Used the Shapely core instead of the child theme and all works fine. Something in the child theme?
The child theme was created a year ago from

**Found topic #139907 - comparative function files. Checked mine against the topic VER A only to discovered an insertion for ‘deferred parsing of Javascript’ following the php child code. Removed this code to test and now the child works as expected.

// Defer parsing of Javascript Files
function defer_parsing_of_js ( $url ) {
if ( FALSE === strpos( $url, ‘.js’ ) ) return $url;
if ( strpos( $url, ‘jquery.js’ ) ) return $url;
return "$url’ defer ";
add_filter( ‘clean_url’, ‘defer_parsing_of_js’, 11, 1 );

Problem appears solved.

Hi, there

Sounds good, thank you for sharing solution :slight_smile:
I will close this case now, Feel free to contact us again if you have other questions