upgrading joomla 2.5.28 to 3.x makes many errors - joomla

my joomla language is persian
I put the error on maximum and disabled remember me component
but when I try to upgrade joomla, after 86% forwarding, a blank page with a php error appears
then I can't access any part of my admin section
please give me a link to shows a step by step upgrading joomla.
many links I found but not help full

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Call to undefined method JAdminCssMenu::load()

I have updated joomla version from 3.6.5 to 3.7 joomla latest version.
Now I am getting fatal error on site backend :
Fatal error: Call to undefined method JAdminCssMenu::load() in /public_html/administrator/modules/mod_menu/mod_menu.php on line 25
Can anyone please provide me solution to get it fixed.
Thanks
The temp fix does work, (uncomment line 25). However I found it was a component that was causing the error, SP Page Builder, once uninstalled, all worked fine :D
I had the same issue but you don't need to uninstall SPPageBuilder, just go to yoursite.co.uk/administrator/index.php?option=com_modules&view=modules, filter by Administrator modules and unpublish the one called "SP Page Builder Admin Menu".
I have also received the same error on a couple sites so far after updating. I added a php override to my htaccess file to bring the sites back online. I added the following to the rewrite section of my htaccess file:
php_value memory_limit 128M
This increases the memory to 128MB. Not the best way to fix the issue, but it works right now. I don't know if this issue is related to the 3.7 upgrade or not, but it's awfully coincidental that 2 of my sites, and now coming across this post happened after upgrading. I wonder if there is a bug in the new Joomla version, or if it requires more memory now.
This is faced by many who used JSN Poweradmin. You need to uninstall it to run your Joomla site or you can simply comment out or delete this line on line no 25
//$menu->load($params, $enabled);
in the file /administrator/modules/mod_menu/mod_menu.php.
I have replaced mod_menu complete Directory/Files with old one (3.6.5) and its working now.
If you are using JSN Poweradmin and you tried to install SP Page Builder, Just go to this directory:
administrator\modules
and delete this folder: mod_sppagebuilder_admin_menu
Now Joomla Admin panel would work OK and also SP Page Builder component is ready to use.

Joomla Akeeba Fatal error

My client set auto-upgrade for a component "Smart form golder' component.
After the auto upgrade, Akeeba components stop working.
It throws fatal error in administrator component page -
Fatal error: Access level to AkeebasubsToolbar::renderSubmenu() must be public (as in class FOFToolbar) in /public_html/administrator/components/com_akeebasubs/toolbar.php on line 358
But the front end working fine, when I checked with Akeeba support forum, they said that it requires upgrade. I customize the component so I am not willing to do also the upgrade can be done through Joomla admin panel and the page are not loading properly. So I am not sure how to fix this.
Please help me.
Simply reinstall the modified version of the fof your version of Akeeba component came from. Your new component "smart form golder" may stop working.
fof - "framework on framework" is now integrated in Joomla since version 3.2. It was developed by Akeeba and ships with all their components; alas it changed a lot between versions, you usually need the exact version the component shipped with.

Getting modules working in Joomla 3.1.4

I am experimenting with Joomla 3.1.4. Whenever I add a new module the template does not show at all in the front-end. The site is blank. On disabling the new module it starts showing properly again. Even a basic hello world type of module does not seem to work and nor does a third party extension I have tried.
I can see them in the extension manager and in the module manager and they have installed successfully. Frustrated with all this I decided to install a new 3.1 template which too installed successfully. However this template does not show anything in the front-end either with my module enabled. It almost seems that there is some sort of security restriction which is disabling the template from rendering whenever any change is made to the basic installation.
Can someone please give pointers to resolving this odd behaviour?
Probably one or some of the core files required for the modules to work are missing.
Head to Global configuration and make sure your Error reporting is set to development. Reload the page and update your question with the error message.
Why not try the newer Joomla 3.1.5 (Download page)? I know that 3.1.4 had at least one problem which could possibly cause server errors in conjunction with extensions (the most likely reason for the blank page that you see).
In general, when encountering a blank page, the first thing to do should be to check the error log of your webserver!

class not found error in joomfish

I'm creating website using joomla 3.0. I'm using joomfish component for multi language website. Installation is done but if I'll try to open the joomfish control panel it show the error like
Fatal error: Class '' not found in
/var/www/muvacon/libraries/joomla/database/driver/mysql.php on line
397
I'm new to joomla please suggest any link to solve this issue. I have already searched many forum I did not get any solution.
JoomFish has not yet been released for Joomla 3.0, therefore you will most likely get errors such as the one you provided. It is only available for Joomla 1.5 and 2.5 at the moment. They have a beta version (2.5) which is available for club members, however I'm not sure if they have done any testing on Joomla 3.0 with it.

joomla: jomsocial installation problem (winxp)

i'm trying to install the jomsocial plugin on my local joomla.
joomla (v1.6) was freshly installed from scratch - i'm having the latest version of jomsocial (v2.20)
i've followed the jomsocial installation instructions but it didn't work,
during the installation process i got the same error over + over again:
Strict Standards: Only variables should be assigned by reference in ...
any ideas what could be wrong?
thanks
It would be helpful if you posted the complete error, but it looks like you need to change your php.ini error reporting log level.
See - joomla 1.5.22 on mysql 5.5

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