hello every one , i have an k2 issue with smart search indexer, it worked fine but :ohmy: i dont know what happens it generate the notices and fatal error as well, and because of it it stopped the smart search indexer to work. the errors are below :-

PHP Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /home/******/****/components/com_k2/helpers/route.php on line 191

Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /home/******/*****/components/com_k2/helpers/route.php on line 191
PHP Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /home/*****/******/components/com_k2/helpers/route.php on line 191

Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /home/*******/*****/components/com_k2/helpers/route.php on line 191
PHP Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /home/******/*****/components/com_k2/helpers/route.php on line 191

Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /home/******/******/components/com_k2/helpers/route.php on line 191
PHP Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /home/*****/*****/components/com_k2/helpers/route.php on line 191

Notice: Use of undefined constant K2_JVERSION - assumed 'K2_JVERSION' in /home/******/****/components/com_k2/helpers/route.php on line 191
PHP Fatal error: Class 'K2Model' not found in /home/*****/*****/components/com_k2/helpers/route.php on line 318

Fatal error: Class 'K2Model' not found in /home/*******/*******/components/com_k2/helpers/route.php on line 318 :unsure: :(