Update error_report.html.haml

app/views/user_mailer/error_report.html.haml

@@ -1,9 +1,9 @@
 %p=@message.html_safe if @message.present?
 %pre=@report
 
-- if @exception.present? && @exception.respond_to?(:backtrace)
+- if @exception.present?
 	%h1 Backtrace
-	%pre=@exception.backtrace.join("\n")
+	%pre=@exception
 
 %h1 Details
 %table.error-report
@@ -47,4 +47,4 @@
 	- @request['env'].each do | key, value |
 		%tr
 			%td=key
-			%td=value
+			%td=value