Fatal Error – Uncaught exception

Hey Guys, I’ve seen this error a few times recently, is it something i should be concerned about??

Website: poi-australia.com.au

Warning: rename(/home/poiaustraliacom/public_html/wp-content/cache/geodir-gd-booster/cache/https/poi-australia-com-au-5835645e82b94724747865-tmp,/home/poiaustraliacom/public_html/wp-content/cache/geodir-gd-booster/cache/https/poi-australia-com-au): Directory not empty in /home/poiaustraliacom/public_html/wp-content/plugins/geodir_gd_booster/includes/share.php on line 1465

Fatal error: Uncaught exception 'Exception' with message 'Unable to delete files. Rename failure on tmp directory: <code>/home/poiaustraliacom/public_html/wp-content/cache/geodir-gd-booster/cache/https/poi-australia-com-au-5835645e82b94724747865-tmp</code>.' in /home/poiaustraliacom/public_html/wp-content/plugins/geodir_gd_booster/includes/share.php:1466 Stack trace: #0 /home/poiaustraliacom/public_html/wp-content/plugins/geodir_gd_booster/includes/share.php(1235): geodir_gd_boostershare->delete_files_from_host_cache_dir('/^.+/i') #1 /home/poiaustraliacom/public_html/wp-content/plugins/geodir_gd_booster/geodir-gd-booster.inc.php(800): geodir_gd_boostershare->clear_files_from_host_cache_dir('/^.+/i') #2 /home/poiaustraliacom/public_html/wp-content/plugins/geodir_gd_booster/geodir-gd-booster.inc.php(899): geodir_gd_boosterplugin->clear_cache() #3 /home/poiaustraliacom/public_html/wp-content/plugins/geodir_gd_booster/geodir-gd-booster.inc.php(1787): geodir_gd_boosterplugin->auto_clear_cache() #4 [internal function]: geodir_gd_boost in /home/poiaustraliacom/public_html/wp-content/plugins/geodir_gd_booster/includes/share.php on line 1466

It has appeared when running plugin/translation updates and when updating one of geodirectories categories

Thanks