Warning: in_array() expects parameter 2… After installing Google XML Sitemaps.

Warning: in_array() expects parameter 2 to be array, null given in …/public_html/wp-content/plugins/dw-question-answer/dw-question-answer.php on line 211

// using action upgrader_process_complete
public function register_upgrade_plugin( $upgrader_object, $args ) {
$file_name = plugin_basename( __FILE__ );
if ( in_array( $file_name, $args['plugins'] ) ) {
update_option( 'dwqa_plugin_upgraded', true );
}

to be specific. line 211 is this.

if ( in_array( $file_name, $args['plugins'] ) ) {

please help me.

https://ww.wp.xz.cn/plugins/google-sitemap-generator/