RankMath update compatibility issue

Trying to run this with Rank Math SEO version 1.0.260 triggers the following:

[17-Dec-2025 14:22:42 UTC] PHP Fatal error:  Uncaught Error: Class "MyThemeShop\Helpers\Str" not found in /wp-content/plugins/cf-images/app/integrations/class-rank-math.php:229
Stack trace:
#0 /wp-content/plugins/cf-images/app/integrations/class-rank-math.php(153): CF_Images\App\Integrations\Rank_Math->get_filename()
#1 /wp-includes/class-wp-hook.php(324): CF_Images\App\Integrations\Rank_Math->fix_file_name_replacement()
#2 /wp-includes/plugin.php(205): WP_Hook->apply_filters()
#3 /wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-replacer.php(113): apply_filters()
#4 /wp-content/plugins/seo-by-rank-math/includes/class-helper.php(56): RankMath\Replace_Variables\Replacer->replace()
#5 /wp-content/plugins/seo-by-rank-math/includes/modules/image-seo/class-add-attributes.php(145): RankMath\Helper::replace_vars()
#6 /wp-content/plugins/seo-by-rank-math/includes/modules/image-seo/class-add-attributes.php(106): RankMath\Image_Seo\Add_Attributes->set_image_attribute()
#7 /wp-includes/class-wp-hook.php(324): RankMath\Image_Seo\Add_Attributes->add_img_attributes()
#8 /wp-includes/plugin.php(205): WP_Hook->apply_filters()
#9 /wp-content/plugins/cwicly/core/includes/dynamic/cc-content.php(72): apply_filters()
#10 /wp-content/plugins/cwicly/core/includes/dynamic/render.php(488): cc_content_maker()
#11 /wp-content/plugins/cwicly/core/includes/dynamic/render.php(436): cc_get_dyn()
#12 [internal function]: {closure:cc_parser():427}()
#13 /wp-content/plugins/cwicly/core/includes/dynamic/render.php(425): preg_replace_callback()
#14 /wp-content/plugins/cwicly/core/includes/dynamic/render.php(409): cc_parser()
#15 /wp-content/plugins/cwicly/core/includes/blocks/content/content.php(43): cc_render()
#16 /wp-includes/class-wp-block.php(586): cc_content_render_callback()
#17 /wp-includes/blocks.php(2359): WP_Block->render()
#18 /wp-includes/blocks.php(2431): render_block()
#19 /wp-includes/block-template.php(291): do_blocks()
#20 /wp-includes/template-canvas.php(12): get_the_block_template_html()
#21 /wp-includes/template-loader.php(106): include('...')
#22 /wp-blog-header.php(19): require_once('...')
#23 /index.php(17): require('...')
#24 {main}
  thrown in /wp-content/plugins/cf-images/app/integrations/class-rank-math.php on line 229