Plugin gives an error

Deprecated: Automatic conversion of false to array is deprecated in /home/httpd/vhosts/plc.sbw.media/domains/referenzen.sbw.media/wp-content/plugins/generate-child-theme/generate-child-theme.php on line 247 Warning: Cannot modify header information – headers already sent by (output started at /home/httpd/vhosts/plc.sbw.media/domains/referenzen.sbw.media/wp-content/plugins/generate-child-theme/generate-child-theme.php:247) in /home/httpd/vhosts/plc.sbw.media/domains/referenzen.sbw.media/wp-includes/pluggable.php on line 1531 Warning: Cannot modify header information – headers already sent by (output started at /home/httpd/vhosts/plc.sbw.media/domains/referenzen.sbw.media/wp-content/plugins/generate-child-theme/generate-child-theme.php:247) in /home/httpd/vhosts/plc.sbw.media/domains/referenzen.sbw.media/wp-includes/pluggable.php on line 1534