I am installing Xoops 2.5.11 and this error appeared, I need help.

Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$assignByRef is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$appendByRef is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$append is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$getTemplateVars is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$loadPlugin is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiled is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiler is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$_codeFrame is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$getLiterals is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$addLiterals is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$setLiterals is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$getTemplateVars is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$_writeFile is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiled is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiler is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$_foreach is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^e6fb2611ff28f7434db26e842f2b699c27992027_0.db.systemheader.tpl.php line 27
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiled is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiler is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^8c49e43800226b56d7b3acd4fbcd58c941bf9748_0.db.systempreferences.tpl.php line 33
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiled is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiler is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Extension_Handler::$getTemplateVars is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_extension_handler.php line 182
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiled is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiler is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiled is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiler is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiled is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiler is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiled is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiler is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^144482652d1bc7de1f70eb90dd6be12271600070_0.file.xo_globalnav.tpl.php line 29
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^144482652d1bc7de1f70eb90dd6be12271600070_0.file.xo_globalnav.tpl.php line 40
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^144482652d1bc7de1f70eb90dd6be12271600070_0.file.xo_globalnav.tpl.php line 40
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^144482652d1bc7de1f70eb90dd6be12271600070_0.file.xo_globalnav.tpl.php line 53
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^144482652d1bc7de1f70eb90dd6be12271600070_0.file.xo_globalnav.tpl.php line 53
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^144482652d1bc7de1f70eb90dd6be12271600070_0.file.xo_globalnav.tpl.php line 53
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^144482652d1bc7de1f70eb90dd6be12271600070_0.file.xo_globalnav.tpl.php line 53
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^144482652d1bc7de1f70eb90dd6be12271600070_0.file.xo_globalnav.tpl.php line 40
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^144482652d1bc7de1f70eb90dd6be12271600070_0.file.xo_globalnav.tpl.php line 53
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^144482652d1bc7de1f70eb90dd6be12271600070_0.file.xo_globalnav.tpl.php line 40
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiled is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiler is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Variable::$do_else is deprecated in file /xoops_data/caches/smarty_compile/5bd9dcc2_system_cp_transition_default^b7f6d85e806bbb14740073e07ed669baea90f90f_0.file.xo_toolbar.tpl.php line 32
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiled is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiler is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiled is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiler is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiled is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719
Unknown: Creation of dynamic property Smarty_Internal_Template::$compiler is deprecated in file /class/libraries/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php line 719