Repeating error in server error_log

Hi, I was having disk space issues with my server and found the culprit to be this plugin being caught in an infinite loop. My error_log on the server was +13GBs. The error that keeps repeating is:

PHP Warning: ftell() expects parameter 1 to be resource, boolean given in /backwpup/inc/class-job.php on line 1160
PHP Warning: feof() expects parameter 1 to be resource, boolean given in /backwpup/inc/class-job.php on line 1146
PHP Warning: fgets() expects parameter 1 to be resource, boolean given in /backwpup/inc/class-job.php on line 1147

Any ideas on fixes? Thanks!

https://ww.wp.xz.cn/plugins/backwpup/