The DLL's are not missing, the install just didn't create the SYMLINKS(Junctions) for that DLL in the apache/bin folder.
This can be corrected by simply doing this using the wampmanager menus
left click wampmanager -> Apache -> Version -> 2.4.9 ( Click on the 2.4.9 menu item )
This will rebuild all the SYMLINKS and the error will go away.
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(Windows 10 Pro 64bit) (Wampserver 3.3.4 64bit) Aestan Tray Menu 3.2.5.4
<Apache versions MULTIPE> <PHP versions MULTIPLE> <MySQL Versions MULTIPLE>
<MariaDB versions MULTIPLE> <phpMyAdmin versions MULTIPLE> <MySQL Workbench 8.0.23>Read The Manuals Apache --
MySQL --
PHP --
phpMyAdminGet your Apache/MySQL/mariaDB/PHP ADDONs here from the
WAMPServer alternate Repo-X-X-X-
Backup your databases regularly Here is How dont regret it later! Yes even when developing -X-X-X-