Error running a Lein repl, unable to find valid certification path to requested target

I was running into a certificate related error when launching a clojure REPL with lein repl.

The error message reads

"PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target"

for multiple maven and clojar repos.

Solution was to manually add the certificates for these websites to the java keystore.

In this specific scenario with running Lein REPL, I had to download the certificates for the following website and add them manually to the keystore

https://repo1.maven.org/maven2/

and 

https://repo.clojars.org/

Steps to download the certificate

Navigate to the website 

click on the lock icon to view the certificate ( this is chrome)

Click on Certificate 

Select the Details tab 

click on the copy to file option 

Follow the wizard to save the .cer file to your local folder.

Make sure you select the .CER file option when saving the certificate.

Using the Java Keytool to add the certificate to the Java Keystore

run the following command to install the certificate into the Java Key store 

keytool -importcert -file mavenrepo.cer -keystore C:\devtools\openjdk-13.0.2_windows-x64_bin\jdk-13.0.2\lib\security\cacerts -alias "mavenrepo"

NOTE

mavenrepo.cer is the certificate downloaded for the maven repo 

The keystore being updated is the cacerts keystore found in the JDK folder referenced above

If the certificate is successfully added to the keystore you can open a new console and run lein repl.