Ashok Kumar Nath on "[Plugin: W3 Total Cache] Minify Setting not working for all my sites. Why?"

Hello sweetlyrics

Would you please enable debug mode and check if any error is shown in that page?

To enable debug mode please edit a line in your wp-config.php:
Change

define('WP_DEBUG', false);

to

define('WP_DEBUG', true);
define('WP_DEBUG_LOG', true);
define('WP_DEBUG_DISPLAY', false);

That will create a file in wp-content directory called - debug.log. Now try to login again. Check that file and see if any error in there.

Have a good day!

Cheers
Ash