Login Error Message

[phobic]

I have never seen this message but this thread could be useful:

https://post4vps.com/thread-2225.html

If you have upgraded to 1.8.16 or above, please read the following instructions carefully.

Templates requiring changes:

• error_nopermission
  
  
• header_welcomeblock_guest
  
  
• member_login
  
  
• portal_welcome_guesttext
  
  
  

1. Localize form tag
Open each template and look for <form action="member.php" *>. They are the forms you use when logging in. The form tag will likely include other attributes, which you can ignore.

2. Add token
Add after <form action="member.php"> the following piece of code:

<input name="my_post_key" type="hidden" value="{$mybb->post_code}" />

It's that simple. Your users will now be able to login again. my_post_key input is in fact now mandatory to be sent alongside other form parameters in order to reduce potential malicious attacks.