add log

app/Http/Api/MdRender.php

@@ -307,18 +307,21 @@ class MdRender{
          */
         Log::info('mermaid');
         if(strpos($markdown,"```mermaid") !== FALSE){
+            Log::info('has mermaid');
             $lines = explode("\n",$markdown);
             $newLines = array();
             $mermaidBegin = false;
             $mermaidString = array();
             foreach ($lines as  $line) {
                 if($line === "```mermaid"){
+                    Log::info('mermaidBegin');
                     $mermaidBegin = true;
                     $mermaidString = [];
                     continue;
                 }
                 if($mermaidBegin){
                     if($line === "```"){
+                        Log::info('mermaid end');
                         $newLines[] = "{{mermaid|".base64_encode(\json_encode($mermaidString))."}}";
                         $mermaidBegin = false;
                     }else{