Unable to generate controllers

[skills-up]

Hello,

I've generated models from the tables using the steps that were outlined. However, when it comes to generating the controller, I'm getting the below error:

SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'where `id` is null' at line 1 (Connection: mysql, SQL: update `users` set  where `id` is null) on line 760 in /vendor/laravel/framework/src/Illuminate/Database/Connection.php

I cannot fathom the source of this issue. Clearly the value between set and where is missing. But, I don't know where or why a query is being executed.

Any help will be appreciated.

Thanks!