What should I do if smarty reports an error?

Smarty error: smarty property error: Notice: Undefinedproperty: Smarty ::$ cacheinginD: \ develop \ PHP \ VertrigoServ \ www \ learn \ smarty \ libs \ Smarty. class. php smarty error
Error in smarty properties:
Notice: Undefined property: Smarty: $ cacheing in D: \ develop \ PHP \ VertrigoServ \ www \ learn \ smarty \ libs \ Smarty. class. php on line 669


Smarty engine exception:
Fatal error: Uncaught exception 'smartyexception' with message 'Call of unknown method 'hisplay '. 'In D: \ develop \ PHP \ VertrigoServ \ www \ learn \ smarty \ libs \ sysplugins \ smarty_internal_templatebase.php on line 758


I use vertrigo as a WEB server and apache + mysql. it should be okay...
But why is an error reported when creating a template ..--

------ Solution --------------------
Sorry is wrong.

Undefined property: Smarty: $ cacheing
Attribute $ cacheing is not defined.

Call of unknown method 'hisplay '....
Call an unknown method (history )...

------ Solution --------------------
Clarify the second point.
1. whether your smarty is an official version.
2. it is clear that the variable is missing and you need to register it, for example, $ smarty-> assign ('cacheing', here is the value );
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Paste the code you executed. Check whether you follow the smarty statement.
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Are you sure you want
$ Smarty-> display ('');
Instead
$ Smarty-> hisplay ("");

?