Fix for "Fatal error: Uncaught exception 'Exception' with message 'un…

…known engine'" (#553)

* Fix Fatal error: Uncaught exception 'Exception' with message 'unknown engine'

* Update readme

Cdnfsd_CacheFlush.php

@@ -196,10 +196,10 @@ static public function w3tc_flush_execute_delayed_operations( $actions_made ) {
 
 		if ( $o->flush_all_requested ) {
 			$core = Dispatcher::component( 'Cdnfsd_Core' );
-			$engine = $core->get_engine();
 
-
 			try {
+				$engine = $core->get_engine();
+
 				if ( !is_null( $engine ) ) {
 					$engine->flush_all();
 					$actions_made[] = array( 'module' => 'cdn' );
@@ -219,8 +219,10 @@ static public function w3tc_flush_execute_delayed_operations( $actions_made ) {
 				$urls = array_keys( $o->queued_urls );
 
 				$core = Dispatcher::component( 'Cdnfsd_Core' );
-				$engine = $core->get_engine();
+
 				try {
+					$engine = $core->get_engine();
+
 					if ( !is_null( $engine ) ) {
 						$engine->flush_urls( $urls );
 						$actions_made[] = array( 'module' => 'cdn' );

README.md

@@ -25,4 +25,5 @@ Since the last [official release](https://wordpress.org/plugins/w3-total-cache/)
 <!--- :diamond_shape_with_a_dot_inside: Update | [Label](https://github.com/) | --->
 
 Type | More Information |
-:--- | --- |
+:--- | --- |
+:beetle: Bug Fix | [Fix for "Fatal error: Uncaught exception 'Exception' with message 'unknown engine'"](https://github.com/szepeviktor/w3-total-cache-fixed/pull/553) |