Latest WordPress 5.3 Update Causing Themler Themes to break

These are the errors that i am getting as a result of the 5.3 update. Themler, please make this compatible with this update.

Warning: Declaration of WP_Export_Theme_Installer_Skin::feedback($string) should be compatible with WP_Upgrader_Skin::feedback($string, ...$args) in /home2/gmmcreative/public_html/demo/virtualoffice/wp-content/themes/drjcprmiami/export/CoreUpdateHelper.php on line 8

Warning: Declaration of WP_Export_Upgrader_Skin::feedback($string) should be compatible with WP_Upgrader_Skin::feedback($string, ...$args) in /home2/gmmcreative/public_html/demo/virtualoffice/wp-content/themes/drjcprmiami/export/CoreUpdateHelper.php on line 39

Warning: Cannot modify header information - headers already sent by (output started at /home2/gmmcreative/public_html/demo/virtualoffice/wp-content/themes/drjcprmiami/export/CoreUpdateHelper.php:8) in /home2/gmmcreative/public_html/demo/virtualoffice/wp-includes/functions.php on line 5946

Warning: Cannot modify header information - headers already sent by (output started at /home2/gmmcreative/public_html/demo/virtualoffice/wp-content/themes/drjcprmiami/export/CoreUpdateHelper.php:8) in /home2/gmmcreative/public_html/demo/virtualoffice/wp-admin/includes/misc.php on line 1252

Warning: Cannot modify header information - headers already sent by (output started at /home2/gmmcreative/public_html/demo/virtualoffice/wp-content/themes/drjcprmiami/export/CoreUpdateHelper.php:8) in /home2/gmmcreative/public_html/demo/virtualoffice/wp-admin/admin-header.php on line 9

Warning: Cannot modify header information - headers already sent by (output started at /home2/gmmcreative/public_html/demo/virtualoffice/wp-content/themes/drjcprmiami/export/CoreUpdateHelper.php:8) in /home2/gmmcreative/public_html/demo/virtualoffice/wp-includes/option.php on line 958

Warning: Cannot modify header information - headers already sent by (output started at /home2/gmmcreative/public_html/demo/virtualoffice/wp-content/themes/drjcprmiami/export/CoreUpdateHelper.php:8) in /home2/gmmcreative/public_html/demo/virtualoffice/wp-includes/option.php on line 959

I have the same problem ... what about it?

I have the same problem in WP 5.3:

"Warning: Declaration of WP_Export_Installer_Skin::feedback($string) should be compatible with WP_Upgrader_Skin::feedback($string, ...$args) in /nfsmnt/hosting2_2/8/5/85ce95be-7844-4b6b-bab5-e2cb97079374/agrispecial.sk/web/wp-content/themes/Agrispecial/export/export.php on line 1009"

export.php line 1009 is:
"class WP_Export_Installer_Skin extends Theme_Installer_Skin {"

What is the problem?

Last edited 13 November 2019 by f.keckes

Yes, equal issues here. WP 5.3. was okay, but upgrading to 5.4 this morning gives the following 2 warnings:

Warning: Declaration of WP_Export_Upgrader_Skin::feedback($string) should be compatible with WP_Upgrader_Skin::feedback($string, ...$args) in /var/www/vhosts/webundprint24.de/httpdocs/webundprint24_website_shop/wp-content/themes/wp24/export/CoreUpdateHelper.php on line 8

Warning: Declaration of WP_Export_Upgrader_Skin::feedback($string) should be compatible with WP_Upgrader_Skin::feedback($string, ...$args) in /var/www/vhosts/webundprint24.de/httpdocs/webundprint24_website_shop/wp-content/themes/wp24/export/CoreUpdateHelper.php on line 39

But theme seems not to be broken.

Did anybody else report this to themler to fix it? Or, am i the only one. My hosting company said they were inundated with calls saying that their themes had broken as a result of this update. Themler needs to fix this.

Hello,

We are sorry for the issue. It should be fixed soon and we will let you know when the fix is available.

Sincerely,
Nettie

Hello,

The update is available now. Please follow the suggestion from this topic:
https://answers.themler.io/questions/193781/themler-v493-beta-compatibility-with-wordpress-5-3

Sincerely,
Nettie