No xdebug library in the lib extensions directory
Entries in php.ini incorrectly point to the "AMPPS" directory - 3.9 installs in the "Ampps" directory.
from the php.ini file:
;ioncube loader
zend_extension = "/Applications/AMPPS/php-7.3/lib/extensions/ioncube_loader_dar_7.3.so"
;OPCache
;zend_extension = "/Applications/AMPPS/php-7.3/lib/extensions/opcache.so"
;Debug
;zend_extension = "/Applications/AMPPS/php-7.3/lib/extensions/xdebug.so"
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