When attempting to install Terraform Enterprise using the airgapped option, the installation fails with an error
License bootstrap failed: install license online: online installation in airgapped mode
This error occurs when the TFE installer tries to do an online installation in airgapped mode because the path to where the .airgap file resides was not specified in the configuration files.
/etc/replicated.conf used for configuring your install and verify that the setting
LicenseBootstrapAirgapPackagePath points to a a valid
Save the changes and reattempt the install.