The log output is stored in a file or can be displayed in the console. When the Unity Player initializes, any initial errors are logged in the console through

stderr

. If any initialization error occurs, Unity Player stops running with an error exit code.

By default, Unity writes standard log output into a log file located in your current home directory at . You can customize this path via the Player Data Path setting (menu: > Other Settings > Configuration > Player Data path) or using the command line arguments.

If the standard log output fails to initialize, Unity writes the log output to the console.