PHP Warning in error_log file

The error_log file in the public_html directory contains these lines:

PHP Warning: include(/home/xxx/public_html/components/com_hikashop/controllers/show.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/xxx/public_html/components/com_hikashop/hikashop.php on line 44
PHP Warning: include() [<a href='function.include'>function.include</a>]: Failed opening '/home/xxx/public_html/components/com_hikashop/controllers/show.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/xxx/public_html/components/com_hikashop/hikashop.php on line 44

As I understand from what it says, there should be a file called show.php in components/com_hikashop/controllers folder. There is no such a file there (even in an installation package).

Please adivce how could I rectify the issue?