(sorry I cannot understand if previous message has got through si I repeat)
@tikaram : thank you for you timely answer. Yesterday I got lost because after having updated my site to WordPress 6.0 I could not Customize the theme (Corporate Fotografie) any more.
Now I am not sure that the two facts are linked, anyway this is the issue I encountered: when I select in the Dashboard left column: Appearance -> Customize, a “critical error” message appears and I cannot proceed. The message says that an email has been sent to the Administrator (me).
The subject of the email is (translated from Italian) “Your site [name] has a technical problem”.
The final part of the email looks like the most significant and says:
^^^^
WordPress Version: 6.0
Active Theme: Corporate Fotografie (version 2.0) Current Plugin: (version ) Version PHP 7.2.34
Details of the error
====================
An error of E_COMPILE_ERROR has been caused in the line 0 of the file /web/htdocs/www.cinecircoloromano.it/home/wp-content/themes/fotografie/inc/customizer/upgrade-button/section-pro.php. Message of error: Cannot declare class Fotografie_Upgrade_Pro_Customize_Section_Pro, because the name is already in use
.
