Всё сломалось!
Класс: DB
engine::run();
engine::runComp("catcontent");
catcontent::run();
cTemplate::tplFetch("main");
Smarty_Internal_TemplateBase::fetch("main.html");
Smarty_Internal_TemplateBase::_execute([object],[object],[object],[object],[object]);
Smarty_Internal_Template::render([object],[object]);
Smarty_Template_Compiled::render([object]);
Smarty_Template_Resource_Base::getRenderedTemplateCode([object]);
::content_612ccad50c9300_62754277([object]);
Smarty_Internal_Template::_subTemplateRender("file:./outer/default.html",[object],[object],[object],[object],[object],[object],[object]);
Smarty_Internal_Template::render();
Smarty_Template_Compiled::render([object]);
Smarty_Template_Resource_Base::getRenderedTemplateCode([object]);
::content_612cb6074a12d0_73884952([object]);
Smarty_Internal_Template::_subTemplateRender("file:./../zchk.html",[object],[object],[object],[object],[object],[object],[object]);
Smarty_Internal_Template::render();
Smarty_Template_Compiled::render([object]);
Smarty_Template_Resource_Base::getRenderedTemplateCode([object]);
::content_612cd1b682a572_28375616([object]);
::smarty_function_exec([object],[object]);
engine::runComp("catsections",[object]);
catsections::run();
cTemplate::tplFetch("menu_zchk");
Smarty_Internal_TemplateBase::fetch("menu_zchk.html");
Smarty_Internal_TemplateBase::_execute([object],[object],[object],[object],[object]);
Smarty_Internal_Template::render([object],[object]);
Smarty_Template_Compiled::render([object]);
Smarty_Template_Resource_Base::getRenderedTemplateCode([object]);
::content_6128eaa3ef44b1_46607579([object]);
::smarty_function_exec([object],[object]);
engine::runComp("catblock",[object]);
catblock::run();
catblock::initSection();
DB::execSQL("SELECT * FROM cat_sect_tree WHERE sect_id="a822a9fa2"");
SELECT * FROM cat_sect_tree WHERE sect_id="a822a9fa2"
MySQL server has gone away