s1-agent-install-repo.sh fails with "Site Token does not decode correctly."

[JFish222]

Description:
Failing validation at line 102 of linux/s1-agent-install-repo.sh

Steps to recreate:
Setting the appropriate variables, I ran the following command:
sudo ./s1-agent-install-repo.sh S1_REPOSITORY_USERNAME S1_REPOSITORY_PASSWORD S1_SITE_TOKEN S1_AGENT_VERSION

Output:

INFO:  Found 4 arguments that were passed to the script. 

base64: invalid input

ERROR:  Site Token does not decode correctly.  Please ensure that you've passed a valid Site Token as the first argument to the script. 

Additional Testing
I validated the base64 decode, and can't identify the source of the failure.

Ran:
echo $S1_SITE_TOKEN | base64 -d

Output:
{"url": "https://usea1-pax8-exsp.sentinelone.net", "site_key": "<redacted>"}

Thank you