This is not an install error but a runtime error. It means Instagram detected unusual activity. The solution involves updating the challenge handler in the library files, which is beyond the instacrackercli install phase but requires manual code patching.

Most modern Linux distributions and macOS versions come with Python pre-installed. Windows users can download it from the official Python website.

To avoid a broken installation, you must prepare your system. InstaCrackerCLI requires Python 3.8+ and specific cryptographic libraries.