На сервере такие логи:
[14-Dec-2020 15:53:58 UTC] PHP Fatal error: Uncaught Twig_Error_Loader: Unable to find template "technics/template/extension/module/wallcategory.twig" (looked into: /home/d/site.ru/storage/modification/catalog/view/theme, /home/d/site.ru/public_html/catalog/view/theme). in /home/d/site.ru/public_html/system/library/template/Twig/Loader/Filesystem.php:215
Stack trace:
#0 /home/d/site.ru/public_html/system/library/template/Twig/Loader/Filesystem.php(139

Twig_Loader_Filesystem->findTemplate('technics/templa...')
#1 /home/d/site.ru/public_html/system/library/template/Twig/Environment.php(312

Twig_Loader_Filesystem->getCacheKey('technics/templa...')
#2 /home/d/site.ru/public_html/system/library/template/Twig/Environment.php(378

Twig_Environment->getTemplateClass('technics/templa...', NULL)
#3 /home/d/site.ru/storage/modification/system/library/template/twig.php(42

Twig_Environment->loadTemplate('technics/templa...')
#4 /home/d/site.ru/public_html/system/library/template.php(51

Template\Twig->render('technics/templa...', '1')
#5 /home/d/site.ru/storage/modification/system/engine/loader.php(125

Template->render('technics/templa...', '1')
#6 /home/d/site.ru/public_html/catalog/controller/extension/module/wallcategory.php(76

Loader->view('extension/modul...', Array)
#7 /home/d/site.ru/storage/modification/system/engine/action.php(79

ControllerExtensionModuleWallCategory->index(Array)
#8 /home/d/site.ru/storage/modification/system/engine/loader.php(48

Action->execute(Object(Registry), Array)
#9 /home/d/site.ru/storage/modification/catalog/controller/common/content_top.php(58

Loader->controller('extension/modul...')
#10 /home/d/site.ru/storage/modification/system/engine/action.php(79

ControllerCommonContentTop->index(Array)
#11 /home/d/site.ru/storage/modification/system/engine/loader.php(48

Action->execute(Object(Registry), Array)
#12 /home/d/site.ru/public_html/catalog/controller/common/home.php(14

Loader->controller('common/content_...')
#13 /home/d/site.ru/storage/modification/system/engine/action.php(79

ControllerCommonHome->index()
#14 /home/d/site.ru/public_html/catalog/controller/startup/router.php(25

Action->execute(Object(Registry))
#15 /home/d/site.ru/storage/modification/system/engine/action.php(79

ControllerStartupRouter->index()
#16 /home/d/site.ru/public_html/system/engine/router.php(67

Action->execute(Object(Registry))
#17 /home/d/site.ru/public_html/system/engine/router.php(56

Router->execute(Object(Action))
#18 /home/d/site.ru/public_html/system/framework.php(165

Router->dispatch(Object(Action), Object(Action))
Отключил модуль Стена категорий, заработало, но с ошибками. На чистый ОС встает норм.