There is a problem with the logger from the version of Magento 2.4.1
usually, we were using the logger as follows:
$writer = new \Zend\Log\Writer\Stream(BP . '/var/log/test.log');
$logger = new \Zend\Log\Logger();
$logger->addWriter($writer);
$logger->info('Your text message');
This belongs to the old library
From the new version of Magento we could use the loggers as follows:
$writer = new \Zend_Log_Writer_Stream(BP . '/var/log/CusomterCheck.log');
$logger = new \Zend_Log();
$logger->addWriter($writer);
$logger->info("hello");
or
$writer = new \Laminas\Log\Writer\Stream(BP . '/var/log/test.log');
$logger = new \Laminas\Log\Logger();
$logger->addWriter($writer);
$logger->info('Your text message');