Hi Guys, I'm executing composer install command getting following error, anyone knows the solution. I'm new to Laravel.

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`Package zendframework/zend-json is abandoned, you should avoid using it. Use laminas/laminas-json instead. Package zendframework/zend-stdlib is abandoned, you should avoid using it. Use laminas/laminas-stdlib instead. Package container-interop/container-interop is abandoned, you should avoid using it. Use psr/container instead. Package zendframework/zend-validator is abandoned, you should avoid using it. Use laminas/laminas-validator instead. Package zendframework/zend-escaper is abandoned, you should avoid using it. Use laminas/laminas-escaper instead. Package zendframework/zend-uri is abandoned, you should avoid using it. Use laminas/laminas-uri instead. Package zendframework/zend-loader is abandoned, you should avoid using it. Use laminas/laminas-loader instead. Package zendframework/zend-http is abandoned, you should avoid using it. Use laminas/laminas-http instead. Package zendframework/zendservice-google-gcm is abandoned, you should avoid using it. No replacement was suggested. Package zendframework/zendservice-apple-apns is abandoned, you should avoid using it. No replacement was suggested. Package mtdowling/cron-expression is abandoned, you should avoid using it. Use dragonmantank/cron-expression instead. Package laravel/cashier-braintree is abandoned, you should avoid using it. Use braintree/braintree_php instead. Package zendframework/zend-diactoros is abandoned, you should avoid using it. Use laminas/laminas-diactoros instead. Package jakub-onderka/php-console-color is abandoned, you should avoid using it. Use php-parallel-lint/php-console-color instead. Package jakub-onderka/php-console-highlighter is abandoned, you should avoid using it. Use php-parallel-lint/php-console-highlighter instead. Package jeremeamia/superclosure is abandoned, you should avoid using it. Use opis/closure instead. Package phpoffice/phpexcel is abandoned, you should avoid using it. Use phpoffice/phpspreadsheet instead. Package phpunit/phpunit-mock-objects is abandoned, you should avoid using it. No replacement was suggested. Writing lock file Generating optimized autoload files Deprecation Notice: Class PHPExcel_Best_Fit located in C:/xampp/htdocs/leteats_web/vendor/phpoffice/phpexcel/Classes\PHPExcel\Shared\trend\bestFitClass.php does not comply with psr-0 autoloading standard. It will not autoload anymore in Composer v2.0. in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Autoload/ClassMapGenerator.php:201 Deprecation Notice: Class PHPExcel_Exponential_Best_Fit located in C:/xampp/htdocs/leteats_web/vendor/phpoffice/phpexcel/Classes\PHPExcel\Shared\trend\exponentialBestFitClass.php does not comply with psr-0 autoloading standard. It will not autoload anymore in Composer v2.0. in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Autoload/ClassMapGenerator.php:201 Deprecation Notice: Class PHPExcel_Linear_Best_Fit located in C:/xampp/htdocs/leteats_web/vendor/phpoffice/phpexcel/Classes\PHPExcel\Shared\trend\linearBestFitClass.php does not comply with psr-0 autoloading standard. It will not autoload anymore in Composer v2.0. in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Autoload/ClassMapGenerator.php:201 Deprecation Notice: Class PHPExcel_Logarithmic_Best_Fit located in C:/xampp/htdocs/leteats_web/vendor/phpoffice/phpexcel/Classes\PHPExcel\Shared\trend\logarithmicBestFitClass.php does not comply with psr-0 autoloading standard. It will not autoload anymore in Composer v2.0. in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Autoload/ClassMapGenerator.php:201 Deprecation Notice: Class PHPExcel_Polynomial_Best_Fit located in C:/xampp/htdocs/leteats_web/vendor/phpoffice/phpexcel/Classes\PHPExcel\Shared\trend\polynomialBestFitClass.php does not comply with psr-0 autoloading standard. It will not autoload anymore in Composer v2.0. in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Autoload/ClassMapGenerator.php:201 Deprecation Notice: Class PHPExcel_Power_Best_Fit located in C:/xampp/htdocs/leteats_web/vendor/phpoffice/phpexcel/Classes\PHPExcel\Shared\trend\powerBestFitClass.php does not comply with psr-0 autoloading standard. It will not autoload anymore in Composer v2.0. in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Autoload/ClassMapGenerator.php:201``