After updating from xdebug 3.0.4 to 3.1.1 xdebug fails to start on php 7.4.9.
In apache_error.log:
Failed loading c:/wamp/bin/php/php7.4.9/zend_ext/php_xdebug-3.1.1-7.4-vc15-x86_64.dll
In apache_error.log:
Failed loading c:/wamp/bin/php/php7.4.9/zend_ext/php_xdebug-3.1.1-7.4-vc15-x86_64.dll