diff --git a/workflow/engine/classes/class.AppSolr.php b/workflow/engine/classes/class.AppSolr.php
index 42f273cc3..37312e958 100644
--- a/workflow/engine/classes/class.AppSolr.php
+++ b/workflow/engine/classes/class.AppSolr.php
@@ -2912,19 +2912,20 @@ class AppSolr
     $oAppSolrQueue->createUpdate ($AppUid, $traceData, $updated);
   }
 
-  private function getCurrentTraceInfo()
-  {
-    $resultTraceString = "";
-
-    //
-    $traceData = debug_backtrace();
-    foreach ($traceData as $key => $value) {
-      if($value['function'] != 'getCurrentTraceInfo' && $value['function'] != 'require_once')
-        $resultTraceString .= $value['file'] . " (" . $value['line'] . ") " . $value['function'] . "\n";
+    private function getCurrentTraceInfo()
+    {
+        $resultTraceString = "";
+        $traceData = debug_backtrace();
+        foreach ($traceData as $key => $value) {
+            if ($value['function'] != 'getCurrentTraceInfo' && $value['function'] != 'require_once') {
+                if (isset($value['file']) && isset($value['line']) && isset($value['function'])) {
+                    $resultTraceString .= $value['file'] . " (" . $value['line'] . ") " . $value['function'] . "\n";
+                }
+            }
+        }
+        return $resultTraceString;
     }
-    return $resultTraceString;
-  }
-  
+
   /**
    * Update application records in Solr that are stored in APP_SOLR_QUEUE table
    */
diff --git a/workflow/engine/classes/class.case.php b/workflow/engine/classes/class.case.php
index e1a5bc940..741e76b9c 100644
--- a/workflow/engine/classes/class.case.php
+++ b/workflow/engine/classes/class.case.php
@@ -1152,7 +1152,9 @@ class Cases
             //Logger deleteCase
             $nameFiles = '';
             foreach (debug_backtrace() as $node) {
-                $nameFiles .= $node['file'] . ":" . $node['function'] . "(" . $node['line'] . ")\n";
+                if (isset($node['file']) && isset($node['function']) && isset($node['line'])) {
+                    $nameFiles .= $node['file'] . ":" . $node['function'] . "(" . $node['line'] . ")\n";
+                }
             }
             $dataLog = \Bootstrap::getDefaultContextLog();
             $dataLog['usrUid'] = isset($_SESSION['USER_LOGGED']) ? $_SESSION['USER_LOGGED'] : G::LoadTranslation('UID_UNDEFINED_USER');