Old? RokSprocket extension won't let any of the links in my admin work anymore

[timster]

What is showing:

An error has occurred.
0 Call to undefined method Joomla\CMS\Application\AdministratorApplication::isAdmin()

but nothing in my Admin in terms of links, logout etc is working, all disabled? How do I troubleshoot this if I can''t even access my backups?

[Per Yngve Berg]

Enable Debug in configuration.php and set Error Reporting to 'maximum'.

Examine the Stack Trace.

Joomla\CMS\Application\AdministratorApplication::isAdmin() was changed to isClient('Administrator ').

[toivo]

The last version of RokSprocket, v2.1.28, was released four years ago, a couple of days after Joomla 3.9.18 was released. The Joomla core has changed a lot after that and therefore RokSprocket is not compatible with Joomla 5.

Use phpMyAdmin in the cPanel page, provided by your host, and edit the database table _extensions to disable the troublesome module. Browse until you find the module with the name mod_roksprocket, modify the column 'enabled' from 1 to 0 and save the row.

[timster]

Thanks guys I'll do some variation of that. This Joomla install is on a Google cloud VM instance and I'll have to figure out how to get at the files/database.