This tutorial shows how to fix 404 error that appears on Login module pages after K2 component update.
404 error appears on the Forgot your password, Forgot your username, Create an account pages and when clicking the Login button.
You can fix the error by updating the mod_k2_user and com_k2 folders in the templates/themeXXXX/html folder of Joomla installation:
Connect to server with FTP manager or open a File Manager in your Hosting cPanel.
Find and open the templates/themeXXXX/html folder on server:
Download the updated k2 files for Login module using the following link. Uncompress the downloaded archive.
Drag and drop the mod_k2_user and com_k2 folders into templates/themeXXXX/html through FTP. Alternatively, you can zip mod_k2_user and com_k2 folders and upload zipped files using File Manager of CPanel. Unzip files on server when they are uploaded.
Overwrite the original files with the updated ones when you’re prompted to.
Feel free to check the detailed video tutorial below: