nohlaorg

Good day and thank you for your help.
I also use Wordfence. The code (seems to be about ‘CloseSummer22Banner’) that is causing the error
wp-content/plugins/backup/BackupGuard.php
524 add_action(‘wp_ajax_backup_guard_closeSummer22Banner’, ‘wp_ajax_backup_guard_close_summer22_banner’); 538 `wp_die();
539 }
540
541 function wp_ajax_backup_guard_close_summer22_banner()
542 {
543 check_ajax_referer(‘backupGuardAjaxNonce’, ‘token’);
544 SGConfig::set(‘SG_CLOSE_SUMMER22_BANNER’, 1);`

wp-content/plugins/backup/public/js/sgbackup.js
44 sgBackup.closeSummer22Banner();

218	           }; 	 	 
219	           ajaxHandler.run(); 	 	 
220	       } 	 	 
221	   ); 	 	 
222	}; 	 	 
223	 	 	 
224	sgBackup.closeSummer22Banner = function () { 	 	 
225	   jQuery('.sg-close-summer22-banner').bind( 	 	 
226	       'click', 	 	 
227	       function () { 	 	 
228	           var ajaxHandler = new sgRequestHandler( 	 	 
229	               'closeSummer22Banner', 	 	 
230	               { 	 	 
231	                   token: BG_BACKUP_STRINGS.nonce 	 	 
232	               } 	 	 
233	           ); 	 	 
234	           ajaxHandler.callback = function (response, error) { 	 	 
235	               jQuery('#sg-summer22-banner').remove();

1032	jQuery(window).on("resize", function () { 	 	 
1033	   setSummerButtonPosition(); 	 	 
1034	}); 	 	 
1035	 	 	 
1036	jQuery(window).on("load", function () { 	 	 
1037	   setSummerButtonPosition(); 	 	 
1038	}); 	 	 
1039	 	 	 
1040	function setSummerButtonPosition(file) { 	 	 
1041	 	 	 
1042	   let mainWidth = 1900, 	 	 
1043	       mainLeft = 6.15, 	 	 
1044	       customWidth = jQuery('#summer22background').width(), 	 	 
1045	       customLeft = 0, 	 	 
1046	       windowWidth = jQuery(window).width(); 	 	 
1047	 	 	 
1048	   if (windowWidth < 1440) { 	 	 
1049	       jQuery('#summer22button').css('maxWidth', 130); 	 	 
1050	       mainLeft = 10; 	 	 
1051	   } else { 	 	 
1052	       jQuery('#summer22button').css('maxWidth', 193); 	 	 
1053	   } 	 	 
1054	 	 	 
1055	   customLeft = (customWidth * mainLeft) / mainWidth; 	 	 
1056	 	 	 
1057	   jQuery('#summer22button').css('right', customLeft + '%'); 	 	 
1058	} 	 	 
1059

…wordpress/wp-content/plugins/backup/public/include/header.php (actually begins row 3 but does not C&P)

6	$pluginCapabilities = backupGuardGetCapabilities(); 	 	 
7	 	 	 
8	if ($pluginCapabilities == BACKUP_GUARD_CAPABILITIES_FREE && !$closeSummer22Banner && !$isAdsEnabled) { 	 	 
9	   include_once(SG_NOTICE_TEMPLATES_PATH . 'summer22.php'); 	 	 
10	}

wp-content/plugins/backup/public/css/bgstyle.less.css

10023	/* "summer22" banner START */ 	 	 
10024	#sg-summer22-banner { 	 	 
10025	   position: relative; 	 	 
10026	   margin-top: 10px; 	 	 
10027	   margin-right: 20px; 	 	 
10028	} 	 	 
10029	 	 	 
10030	#sg-summer22-banner .sg-close-summer22-banner { 	 	 
10031	   position: absolute; 	 	 
10032	   cursor: pointer; 	 	 
10033	   right: 5px; 	 	 
10034	   top: 5px; 	 	 
10035	   background-image: url(../img/close.png); 	 	 
10036	   width: 15px; 	 	 
10037	   height: 15px; 	 	 
10038	   background-size: 100%; 	 	 
10039	   background-repeat: no-repeat; 	 	 
10040	} 	 	 
10041	 	 	 
10042	#sg-summer22-banner img { 	 	 
10043	   width: 100%; 	 	 
10044	   height: auto; 	 	 
10045	   outline: none !important; 	 	 
10046	} 	 	 
10047	 	 	 
10048	#sg-summer22-banner a, 	 	 
10049	#sg-summer22-banner a:hover, 	 	 
10050	#sg-summer22-banner a:focus { 	 	 
10051	   display: block; 	 	 
10052	   outline: none !important; 	 	 
10053	   box-shadow: none !important; 	 	 
10054	   max-width: 193px; 	 	 
10055	   position: absolute; 	 	 
10056	   top: 50%; 	 	 
10057	   right: 6.15%; 	 	 
10058	   transform: translate(-0%, -50%); 	 	 
10059	   -ms-transform: translate(-0%, -50%); 	 	 
10060	} 	 	 
10061	/* "summer22" banner END */