unable to install nex/yii2-chosen extension - yii2

Question

I am unable to install nex/yii2-chosen extension in my project using composer please.
My composer shows :
C:\xampp\htdocs\labplus>composer require nex/yii2-chosen Deprecation
Notice: The Composer\Package\LinkConstraint\MultiConstraint class is
deprecated, use Composer\Semver\Constraint\MultiConstraint instead. in
phar://C
:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Package/LinkConstrain
t/MultiConstraint.php:17 Deprecation Notice: The
Composer\Package\LinkConstraint\LinkConstraintInterface interface is
deprecated, use Composer\Semver\Constraint\ConstraintInterface inst
ead. in
phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Packa
ge/LinkConstraint/LinkConstraintInterface.php:17 Failed to decode
response: zlib_decode(): data error Retrying with degraded mode, check
https://getcomposer.org/doc/articles/troubles hooting.md#degraded-mode
for more info Using version dev-master for nex/yii2-chosen
./composer.json has been updated Loading composer repositories with
package information Updating dependencies (including require-dev) Your
requirements could not be resolved to an installable set of packages.
Problem 1
- The requested package dbtek/chosen-bootstrap could not be found in any ver sion, there may be a typo in the package name. Problem 2
- The requested package nex/yii-chosen could not be found in any version, th ere may be a typo in the package name.
Installation failed, reverting ./composer.json to its original
content.
see the cmd snap for more