Error log triggered upon activation of theme cloned via Create Block Theme

I performed a clean installation of WordPress version 6.9.4 and immediately installed the ‘Create Block Theme’ plugin to generate a clone of the “Twenty Twenty-Five” theme. While the theme appears to be functioning correctly, an error log file is generated in the file manager the moment I activate the cloned version. My environment is running PHP version 8.3.30.

[12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/parts): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/patterns): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/styles): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/styles/typography): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/styles/blocks): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/styles/colors): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/styles/sections): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets/images): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets/css): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets/fonts): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets/fonts/vollkorn): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets/fonts/beiruti): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets/fonts/literata): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets/fonts/fira-code): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets/fonts/roboto-slab): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets/fonts/platypi): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets/fonts/ysabeau-office): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:47 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets/fonts/fira-sans): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:48 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/assets/fonts/manrope): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:48 UTC] PHP Warning: file_put_contents(/home/mysite/public_html/wp-content/themes/TT5clon/templates): Failed to open stream: Is a directory in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-utils.php on line 90 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 233 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 233 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 233 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 233 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 233 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 233 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 233 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 233 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 261 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 261 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 261 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 261 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 261 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 261 [12-Apr-2026 04:29:48 UTC] PHP Warning: Undefined property: WP_Block_Template::$media in /home/mysite/public_html/wp-content/plugins/create-block-theme/includes/create-theme/theme-templates.php on line 261

Reproduce the issue by cloning Twenty Twenty-Five with Create Block Theme and activating the clone. Start in includes/create-theme/theme-utils.php around line 90 and includes/create-theme/theme-templates.php around lines 233 and 261, then trace the reported paths and WP_Block_Template::$media warnings. Done means activation no longer produces these PHP warnings.