Access denied for user 'root'@'localhost' windows using Cpanel

I am trying to publish my website through cpanel. when I run the web url of my site, it gives the error Access denied for user ‘root’@’localhost’ and my .env file is given below

APP_NAME=Laravel
APP_ENV=local
APP_KEY=base64:wwuqMKOwBR67OJgHY76xAxEFbCqyKTE/Fd1T25Xfjg8=
APP_DEBUG=true
APP_URL=http://salonfurnisher.co.uk/public/

LOG_CHANNEL=stack

DB_CONNECTION=mysql
DB_HOST=localhost
DB_PORT=3306
DB_DATABASE=ew3tfqy9_myproject
DB_USERNAME=root
DB_PASSWORD=

BROADCAST_DRIVER=log
CACHE_DRIVER=file
QUEUE_CONNECTION=sync
SESSION_DRIVER=file
SESSION_LIFETIME=120

REDIS_HOST=127.0.0.1
REDIS_PASSWORD=null
REDIS_PORT=6379

MAIL_MAILER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=587
MAIL_USERNAME=[REDACTED]
MAIL_PASSWORD=[REDACTED]
MAIL_ENCRYPTION=tls
MAIL_FROM_ADDRESS=[REDACTED]
MAIL_FROM_NAME="Saloon Furnisher"

AWS_ACCESS_KEY_ID=
AWS_SECRET_ACCESS_KEY=
AWS_DEFAULT_REGION=us-east-1
AWS_BUCKET=

PUSHER_APP_ID=
PUSHER_APP_KEY=
PUSHER_APP_SECRET=
PUSHER_APP_CLUSTER=mt1

MIX_PUSHER_APP_KEY="${PUSHER_APP_KEY}"
MIX_PUSHER_APP_CLUSTER="${PUSHER_APP_CLUSTER}"

How I can solve this?