PTC Solution Installer fails with error "HTTP Server failed to start" in Windchill PDMLink

DEBUG  03-06-2022 09:20:12 - apache appears to be down.  Starting it... 
DEBUG  03-06-2022 09:20:12 - Executing: cmd.exe /C set SystemRoot 
DEBUG  03-06-2022 09:20:12 - Executing: cmd.exe /C set SystemRoot 
DEBUG  03-06-2022 09:20:12 - Starting Apache with: C:\Windows\system32\cmd.exe /C start "Apache D:\ptc\Windchill_12.0\HTTPServer" /MIN C:\Windows\system32\cmd.exe /C D:\ptc\Windchill_12.0\HTTPServer\bin\httpd.exe -f D:\ptc\Windchill_12.0\HTTPServer\conf\httpd.conf 
DEBUG  03-06-2022 09:20:12 - Executing: C:\Windows\system32\cmd.exe /C start Apache D:\ptc\Windchill_12.0\HTTPServer /MIN C:\Windows\system32\cmd.exe /C D:\ptc\Windchill_12.0\HTTPServer\bin\httpd.exe -f D:\ptc\Windchill_12.0\HTTPServer\conf\httpd.conf 
DEBUG  03-06-2022 09:20:43 - Post-startup connection check timed out. 
DEBUG  03-06-2022 09:20:43 - com.ptc.windchill.install.psi.InstallCommandException 
DEBUG  03-06-2022 09:20:43 - at com.ptc.windchill.install.suite.runnables.AbstractWebService.start(AbstractWebService.java:300) 
DEBUG  03-06-2022 09:20:43 - at com.ptc.windchill.install.suite.WindchillLoaderManagerImpl.startApache(WindchillLoaderManagerImpl.java:776) 
DEBUG  03-06-2022 09:20:43 - at com.ptc.windchill.install.suite.WindchillLoaderManagerImpl.loadSubinstallerData(WindchillLoaderManagerImpl.java:261) 
DEBUG  03-06-2022 09:20:43 - at com.ptc.windchill.install.suite.WindchillLoaderManagerImpl.process(WindchillLoaderManagerImpl.java:142) 
DEBUG  03-06-2022 09:20:43 - at com.ptc.windchill.install.suite.WindchillLoaderManager.process(WindchillLoaderManager.java:40) 
DEBUG  03-06-2022 09:20:43 - at com.ptc.windchill.install.framework.InstallAction.run(InstallAction.java:469) 
DEBUG  03-06-2022 09:20:43 - at com.ptc.windchill.install.framework.InstallAction.install(InstallAction.java:314) 
DEBUG  03-06-2022 09:20:43 - at com.zerog.ia.installer.actions.CustomAction.installSelf(Unknown Source) 
DEBUG  03-06-2022 09:20:43 - at com.zerog.ia.installer.InstallablePiece.install(Unknown Source) 
DEBUG  03-06-2022 09:20:43 - at com.zerog.ia.installer.InstallablePiece.install(Unknown Source) 
DEBUG  03-06-2022 09:20:43 - at com.zerog.ia.installer.InstallablePiece.install(Unknown Source) 
DEBUG  03-06-2022 09:20:43 - at com.zerog.ia.installer.InstallablePiece.install(Unknown Source) 
DEBUG  03-06-2022 09:20:43 - at com.zerog.ia.installer.GhostDirectory.install(Unknown Source) 
DEBUG  03-06-2022 09:20:43 - at com.zerog.ia.installer.InstallablePiece.install(Unknown Source) 
DEBUG  03-06-2022 09:20:43 - at com.zerog.ia.installer.Installer.install(Unknown Source) 
DEBUG  03-06-2022 09:20:43 - at com.zerog.ia.installer.actions.InstallProgressAction.ae(Unknown Source) 
DEBUG  03-06-2022 09:20:43 - at com.zerog.ia.installer.actions.ProgressPanelAction$1.run(Unknown Source) 
DEBUG  03-06-2022 09:20:43 - Installation is Aborting.  The installation cannot continue.
 
FATAL  06-06-2022 09:01:07 - Aborting installation. 
FATAL  06-06-2022 09:01:07 - Installation is Aborting.  The installation cannot continue.
 
FATAL  06-06-2022 09:01:07 - HTTP Server failed to start.