New Thread Button Issue

[Blackbeard02]

I have tried 2 different mods to add a new thread and I get this message with both mods, can someone tell me how to fix this issue ?

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Here are the 2 mods I have tried

https://vborg.vbsupport.ru/showthread.php?t=219443

and

Instructions:
1- go to your "SHOWTHREAD" template
2- look for the the following code: TWICE

<td class="smallfont"><a href="newreply.php?$session[sessionurl]do=newreply&amp;noquote=1&amp;p=$FIRSTPOSTID" rel="nofollow"><if condition="$show['closethread']"><img src="$stylevar[imgdir_button]/reply.gif" alt="$vbphrase[reply]" border="0" /><else /><img src="$stylevar[imgdir_button]/threadclosed.gif" alt="$vbphrase[closed_thread]" border="0" /></if></a></td>

Replace with

<td class="smallfont"><a href="newthread.php?$session[sessionurl]do=newthread&amp;f=$foruminfo[forumid]"><img src="$stylevar[imgdir_button]/newthread.gif" border="0" alt="$vbphrase[post_new_thread]" /></a>&nbsp;&nbsp;<a href="newreply.php?$session[sessionurl]do=newreply&amp;noquote=1&amp;p=$FIRSTPOSTID"><if condition="$show['closethread']"><img src="$stylevar[imgdir_button]/reply.gif" alt="$vbphrase[reply]" border="0" /><else /><img src="$stylevar[imgdir_button]/threadclosed.gif" alt="$vbphrase[closed_thread]" border="0" ></if></a></td>