Syntax error from httpd.conf

Today, apache stopped working at 4 different servers. After rebuildhttpdconf and restart process, fixed problem. I've seen some syntax errors in the logs. [Tue Nov 27 18:00:17.161623 2018] [mpm_event:notice] [pid 1290:tid 47628417836096] AH00493: SIGUSR1 received. Doing graceful restart AH00526: Syntax error on line 6296 of /etc/apache2/conf/httpd.conf: [Tue Nov 27 18:29:43.752072 2018] [core:warn] [pid 2718:tid 47722274870336] AH00045: child process 2723 still did not exit, sending a SIGTERM [Tue Nov 27 18:29:43.752153 2018] [core:warn] [pid 2718:tid 47722274870336] AH00045: child process 2724 still did not exit, sending a SIGTERM [Tue Nov 27 18:29:43.752175 2018] [core:warn] [pid 2718:tid 47722274870336] AH00045: child process 2725 still did not exit, sending a SIGTERM [Tue Nov 27 18:29:43.752184 2018] [core:warn] [pid 2718:tid 47722274870336] AH00045: child process 2726 still did not exit, sending a SIGTERM
6296 line RewriteRule ^/(.*) /___proxy_subdomain_webdisk/$1 [PT]