What does the error message "Segmentation fault: 11" mean when using yarn?

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The error message "Segmentation fault: 11" is a common error in Unix-based systems, including when using the yarn package manager. It is usually caused by a program attempting to access memory that doesn't belong to it. This can happen due to various reasons such as attempting to use a null or uninitialized pointer, buffer overflows, incorrect use of pointers or memory management, among others. To fix this error, you may need to use a debugger or carefully review your code to identify the root cause of the problem.