Crash after update the database!

  • After wp notified me to update the database, then when I try to access the wp-admin page (https://mysite.com/wp-admin)
    these message came up instead:

    Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘wp_no_robots’ not found or invalid function name in /data/19/1/97/112/1912112/user/2081834/htdocs/wp-includes/plugin.php on line 339

    Fatal error: Call to undefined function is_multisite() in /data/19/1/97/112/1912112/user/2081834/htdocs/wp-login.php on line 82

    Can anyone instruct me any fix on this issue??????? I do not need to keep any of these plugins if some of them cause the trouble!!!

    Thank you very much, I am very desperate on this ??

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Here is what I saw on the plugin.php line 336-343
	do {
		foreach ( (array) current($wp_filter[$tag]) as $the_ )
			if ( !is_null($the_['function']) )
				call_user_func_array($the_['function'], array_slice($args, 0, (int) $the_['accepted_args']));

	} while ( next($wp_filter[$tag]) !== false );

	array_pop($wp_current_filter);
--------------------------------------------------------------
Here is what I saw on the wp-admin.php line 81-86
<body class="login">
<?php   if ( !is_multisite() ) { ?>
<div id="login"><h1><a>" title="<?php echo esc_attr( apply_filters('login_headertitle', __( 'Powered by WordPress' ) ) ); ?>"><?php bloginfo('name'); ?></a></h1>
<?php   } else { ?>
<div id="login"><h1><a>" title="<?php echo esc_attr( apply_filters('login_headertitle', $current_site->site_name ) ); ?>"><span class="hide"><?php bloginfo('name'); ?></span></a></h1>
<?php   }

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