Negative values for fid are used internally for going to various pages. It might be an issue you have with your .htaccess file because I can't go to forumdisplay.php?fid=-4. Could you provide the contents of your .htaccess file that has the forumdisplay.php line?
Options -MultiViews +FollowSymlinks -Indexes
#
# If mod_security is enabled, attempt to disable it.
# - Note, this will work on the majority of hosts but on
# MediaTemple, it is known to cause random Internal Server
# errors. For MediaTemple, please remove the block below
#
<IfModule mod_security.c>
# Turn off mod_security filtering.
SecFilterEngine Off
# The below probably isn't needed, but better safe than sorry.
SecFilterScanPOST Off
</IfModule>
#
# MyBB "search engine friendly" URL rewrites
# - Note, for these to work with MyBB please make sure you have
# the setting enabled in the Admin CP and you have this file
# named .htaccess
#
<IfModule mod_rewrite.c>
RewriteEngine on
# Some hosts need a RewriteBase specification.
RewriteBase /
# Google SEO workaround for search.php highlights:
# Make this rule the first rewrite rule in your .htaccess!
RewriteRule ^([^&]*)&(.*)$ https://gossipion.xyz/$1?$2 [L,QSA,R=301]
# Google SEO 404:
ErrorDocument 404 /misc.php?google_seo_error=404
# Google SEO URL Forums:
RewriteRule ^Forum\-([^./]+)$ forumdisplay.php?google_seo_forum=$1 [L,QSA,NC]
# Google SEO URL Threads:
RewriteRule ^Thread\-([^./]+)$ showthread.php?google_seo_thread=$1 [L,QSA,NC]
# Google SEO URL Announcements:
RewriteRule ^Announcement\-([^./]+)$ announcements.php?google_seo_announcement=$1 [L,QSA,NC]
# Google SEO URL Users:
RewriteRule ^User\-([^./]+)$ member.php?action=profile&google_seo_user=$1 [L,QSA,NC]
# Google SEO URL Calendars:
RewriteRule ^Calendar\-([^./]+)$ calendar.php?google_seo_calendar=$1 [L,QSA,NC]
# Google SEO URL Events:
RewriteRule ^Event\-([^./]+)$ calendar.php?action=event&google_seo_event=$1 [L,QSA,NC]
RewriteRule ^forum-([0-9]+)\.html$ forumdisplay.php?fid=$1 [L,QSA]
RewriteRule ^forum-([0-9]+)-page-([0-9]+)\.html$ forumdisplay.php?fid=$1&page=$2 [L,QSA]
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^(.*)$ $1.php [L,QSA]
RewriteRule ^thread-([0-9]+)\.html$ showthread.php?tid=$1 [L,QSA]
RewriteRule ^thread-([0-9]+)-page-([0-9]+)\.html$ showthread.php?tid=$1&page=$2 [L,QSA]
RewriteRule ^thread-([0-9]+)-lastpost\.html$ showthread.php?tid=$1&action=lastpost [L,QSA]
RewriteRule ^thread-([0-9]+)-nextnewest\.html$ showthread.php?tid=$1&action=nextnewest [L,QSA]
RewriteRule ^thread-([0-9]+)-nextoldest\.html$ showthread.php?tid=$1&action=nextoldest [L,QSA]
RewriteRule ^thread-([0-9]+)-newpost\.html$ showthread.php?tid=$1&action=newpost [L,QSA]
RewriteRule ^thread-([0-9]+)-post-([0-9]+)\.html$ showthread.php?tid=$1&pid=$2 [L,QSA]
RewriteRule ^post-([0-9]+)\.html$ showthread.php?pid=$1 [L,QSA]
# Force search engines to use gossipion.xyz
RewriteCond %{HTTP_HOST} !^gossipion\.xyz$
RewriteRule ^(.*) https://gossipion.xyz/$1 [R=301,L]
# Specify search friendly URLs
RewriteRule ^([a-z0-9]+)$ /misc.php?page=$1 [L]
RewriteRule ^announcement-([0-9]+)\.html$ announcements.php?aid=$1 [L,QSA]
RewriteRule ^user-([0-9]+)\.html$ member.php?action=profile&uid=$1 [L,QSA]
RewriteRule ^calendar-([0-9]+)\.html$ calendar.php?calendar=$1 [L,QSA]
RewriteRule ^calendar-([0-9]+)-year-([0-9]+)-month-([0-9]+)\.html$ calendar.php?calendar=$1&year=$2&month=$3 [L,QSA]
RewriteRule ^calendar-([0-9]+)-year-([0-9]+)-month-([0-9]+)-day-([0-9]+)\.html$ calendar.php?action=dayview&calendar=$1&year=$2&month=$3&day=$4 [L,QSA]
RewriteRule ^calendar-([0-9]+)-week-(n?[0-9]+)\.html$ calendar.php?action=weekview&calendar=$1&week=$2 [L,QSA]
RewriteRule ^event-([0-9]+)\.html$ calendar.php?action=event&eid=$1 [L,QSA]
<IfModule mod_env.c>
SetEnv SEO_SUPPORT 1
</IfModule>
</IfModule>
#
# If Apache is compiled with built in mod_deflade/GZIP support
# then GZIP Javascript, CSS, HTML and XML so they're sent to
# the client faster.
#
<IfModule mod_deflate.c>
AddOutputFilterByType DEFLATE text/css text/html application/xhtml+xml text/xml application/xml text/plain text/x-component application/javascript application/x-javascript application/rss+xml application/atom+xml application/json application/manifest+json application/x-web-app-manifest+json application/vnd.ms-fontobject application/font-sfnt application/font-woff application/font-woff2 image/svg+xml image/x-icon
</IfModule>
# Note: You are able to choose a different name in the Admin CP. If you've done that you need to change it here too
<Files "error.log">
Order Deny,Allow
Deny from all
</Files>
(2021-01-21, 01:30 AM)dragonexpert Wrote: [ -> ]Negative values for fid are used internally for going to various pages. It might be an issue you have with your .htaccess file because I can't go to forumdisplay.php?fid=-4. Could you provide the contents of your .htaccess file that has the forumdisplay.php line?
Please tell me how can I fix this ?
literally , no one knows how to do this !
please answer someone how do i solve this ?