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wp-content/plugins/litespeed-cache/tpl/inc/in_upgrading.php

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+<?php
+/**
+ * LiteSpeed Cache Upgrade Notice
+ *
+ * Displays a notice informing the user that the LiteSpeed Cache plugin has been upgraded and a page refresh is needed to complete the configuration data upgrade.
+ *
+ * @package LiteSpeed
+ * @since 1.0.0
+ */
+
+namespace LiteSpeed;
+
+defined( 'WPINC' ) || exit;
+
+$message = esc_html__( 'LiteSpeed cache plugin upgraded. Please refresh the page to complete the configuration data upgrade.', 'litespeed-cache' );
+
+echo wp_kses_post( self::build_notice( self::NOTICE_BLUE, $message ) );