An error occurred during installation ThingWorx Foundation Trial v9

Question

I'm having a heck of a time getting the thingworx foundation trial installed. I've tried both RHEL and server 2016 and the error happens during the 'waiting for thingworx' step for each install.The documentation is also very difficult with conflicting information everywhere. A few examples: 
self-signed certificate generation steps are different between the foundation installation documentation and the guide.
  - keytool -genkey -alias selfsigned -keyalg RSA -keystore keyStore.jks -keysize 2048 -storetype jks
    https://support.ptc.com/help/thingworx/platform/r9/en/index.html#page/ThingWorx%2FHelp%2FInstallation%2Fthingworxfoundationinstallerforlinux.html%23
- keytool -genkey -alias tomcat9 -keyalg RSA -keystore twkeystore.jks
&&
- keytool -import -alias tomcat9 -file "twkeystore.jks" -keystore "..\jre\lib\security\cacerts"
    - https://developer.thingworx.com/en/resources/guides/foundation-linux-install-guide/foundation-linux-create-ssl
    - This also doesn't work, see below.[user@localhost ~]$ keytool -import -alias tomcat9 -file "twkeystore.jks" -keystore "..\jre\lib\security\cacerts"Enter keystore password:Re-enter new password:keytool error: java.lang.Exception: Input not an X.509 certificate
Documentation here (https://support.ptc.com/help/thingworx/platform/r9/en/index.html#page/ThingWorx%2FHelp%2FInstallation%2Fthingworxfoundationinstallerforlinux.html%23) shows PostgreSQL or SQL server are prerequisites  this doesn't exist in the prerequisites with the trial guide.
 
The section of the logs that seems relevant of the installer log are here: 
Waiting for ThingWorx platform...[15:26:24] - Start twxIsRunning useSSL = 1
[15:26:24] - checkHttpResponse counter: 0 timeOut :10000 ms
Waiting for ThingWorx Foundation...[15:28:04] - End twxIsRunning , HTTP return code: 0
[15:28:04] Step twxIsRunning script failed :: 0[15:28:04] Executing abort action : ccif_start_post component[15:28:04] - CCIF Services functions: stop ThingWorx-Foundation
 
OpenJDK 11 was used both on the server 2016 and centos installs. Installer also failed with Java SE 11 JDK on server 2016.
[user@localhost ~]$ java -versionopenjdk version "11.0.12" 2021-07-20 LTSOpenJDK Runtime Environment 18.9 (build 11.0.12+7-LTS)OpenJDK 64-Bit Server VM 18.9 (build 11.0.12+7-LTS, mixed mode, sharing)
Any advice or recommendations would be appreciated.