When you install an application on a Mac, the installer creates a log file that records the progress and any errors that occur during the installation process. You can use the Console app to view the install log and troubleshoot any issues that may prevent the installation from completing successfully. To access the install log, you need to launch the Console app from the Applications > Utilities folder, or use Spotlight to search for it. Then, in the Console app, choose Install Log from the Log Reports section in the sidebar. You will see a list of install log files, each with a date and time stamp. You can select the most recent one or the one that corresponds to the installation you are having trouble with. The install log file will show you the details of the installation, such as the source, destination, package name, version, size, and status. It will also show you any errors or warnings that occurred during the installation, such as permission issues, network issues, or corrupted files. You can use the information in the install log to identify the cause of the installation failure and take appropriate actions to resolve it. References: Use the Console app on your Mac, How to view the install log on a Mac, Fix Installation Failed the Installer Encountered an Error on Mac