Php Error after update: /var/log/apache2/error.log PHP 7.1

Hi,

In my Apache Error Log (/var/log/apache2/error.log) I have found some php errors. I found the problem in this rows:

add_action('amp_init','ampforwp_cache_compatible_activator');
function ampforwp_cache_compatible_activator(){
    add_action('template_redirect','ampforwp_cache_plugin_compatible');
}
function ampforwp_cache_plugin_compatible(){
    $ampforwp_is_amp_endpoint = ampforwp_is_amp_endpoint();
    if ( ! $ampforwp_is_amp_endpoint ) {
        return;
    }
    /**
     * W3 total cache
     */
    add_filter( 'w3tc_minify_js_enable', array( $this, '_return_false' ) );
    add_filter( 'w3tc_minify_css_enable', array( $this, '_return_false' ) );
}

I don’t use W3 total Cache Plugin so i deleted them. Now no errors.

I hope it help you to improve your fantastic plugin!

Thank You so much.

• This topic was modified 8 years ago by Fabrizio Betti.