Unable to remove products from the cart page

I have 2 issues in my woocommerce website

Issue #1. Please check the image below.

After removing /wp-content/plugins/woocommerce/assets/js/frontend/checkout.min.js, it came back to normal state.

Issue #2. Unable to remove products from the cart page. I tried everything I came across in the net, but I couldn’t fix it. So, seeking help in here.

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Server specs :
CentOS 6.8 (Final)
nginx/1.10.2
PHP 5.6.27 (fpm-fcgi)
5.7.16 MySQL Community Server

Other modules installed :
Memcached
OPCache

nginx.conf

user nginx; 
worker_processes 12;

error_log /var/log/nginx/error.log warn;

pid /var/run/nginx.pid;

events {
    worker_connections 1024;
}

http {
    include mime.types;
    default_type application/octet-stream;

    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
    		     '$status $body_bytes_sent "$http_referer" '
    		     '"$http_user_agent" "$http_x_forwarded_for"'; 

    #access_log logs/access.log main;

    sendfile on;
    tcp_nopush on; 
    tcp_nodelay on;

    keepalive_timeout 2;
    
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 4;
    gzip_buffers 32 8k;
    gzip_http_version 1.1;
    gzip_min_length 1000;
    gzip_types text/plain text/css text/js application/json application/javascript application/x-javascript text/xml application/xml application/xml+rss text/javascript application/x-font-ttf font/opentype image/svg+xml image/x-icon;
   
    server {
    	listen 80;
    	listen 443 default_server ssl;
    
    	server_name www.qtari.com;

    	if ($scheme = http) {
    	return 301 https://www.qtari.com$request_uri;
    	}
	
	client_max_body_size 32M;

	ssl_certificate /etc/nginx/ssl/qtari_bundle.crt;
    ssl_certificate_key /etc/nginx/ssl/qtari_dec.key;
    ssl_dhparam /etc/pki/tls/certs/dhparam.pem;

	add_header Strict-Transport-Security "max-age=31536000";
	
	ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
	ssl_prefer_server_ciphers on;
   	ssl_ciphers 'ECDH+AESGCM:ECDH+AES256:ECDH+AES128:DH+3DES:!ADH:!AECDH:!MD5';
    ssl_session_cache shared:SSL:20m;
    ssl_session_timeout 10m;

	client_body_buffer_size 16k;
	
	fastcgi_buffering on;
	fastcgi_buffers 8 8k;
	fastcgi_buffer_size 8k;

  
    location / {
		try_files $uri $uri/ /index.php$args;
		root /usr/share/nginx/html/www;
		index index.php index.html index.htm;
	}
	
	error_page 404 /404.html;
		location = /404.html {
		root /usr/share/nginx/html/www;
   	}
	
   	error_page 500 502 503 504 /50x.html;
		location = /50x.html {
		root /usr/share/nginx/html/www;
   	}

   	# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
   	#
   	location ~ \.php$ {
		root /usr/share/nginx/html/www;
		fastcgi_pass 127.0.0.1:9000;
		fastcgi_index index.php;
		fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
		include fastcgi_params;
  	}
   }

}

Steps I tried so far,
1. Deactivated all plugins except WooCommerce and switched back to Twenty Sixteen theme
2. Deactivated WooCommerce and removed all related tables from the database and reinstalled WooCoommerce
3. Cleared memory cache and OPcache [using OPcache plugin]

PS : All were working fine till I install W3 Total Cache plugin.

Please let me know if anymore details are needed.