[Error Message] cant login after install themes

[marksman]

hi
aim new to mybb forums i install mybb and add thems (Duende) from here its work fine but when i try to login i got this error

Authorization code mismatch. Are you accessing this function correctly? Please go back and try again.

but my user name and password are correct


MyBB Version 1.8.17
PHP Version 7.2.7-0ubuntu0.18.04.2
SQL Engine MySQLi 5.7.22
Server Load 2.28


any one can tell how can i fix this?  thank you for your time

[ziuma]

try this post

https://community.mybb.com/thread-218460...pid1308277

---

or read this threads

https://community.mybb.com/thread-218799...pid1309720

[marksman]

thz for your replay but i have no idea where can i add these line

<input name="my_post_key" type="hidden" value="{$mybb->post_code}" /> can u tell path location? and its very hard to locate and change home page link also

[ziuma]

for example: in portal_welcome_guesttext

admin control panel >> template & style >> tempaltes >> your templates >> portal templates>> portal_welcome_guesttext >>

add that code before </form> like this

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

you also do that step in
* error_nopermission
* header_welcomeblock_guest
* member_login

[marksman]

sorry i cant enter admins panel

[wageral]

sorry i cant enter admins panel

Go to 'yourwebsite.com'/admin
There you should be able to login