Final answer:
The 'Buffer cannot be null' error indicates a programming issue where an uninitialized or non-existent buffer is being accessed. The solution is to ensure that a buffer is properly initialized and allocated before use in any operations that require it.
Step-by-step explanation:
The system error 'Buffer cannot be null' suggests that there is an attempt to use a buffer that has not been initialized or allocated in memory. In programming, a buffer is typically an area of memory used to hold data temporarily while it's being moved from one place to another. This error could occur in various programming scenarios, such as when reading data from a file or receiving data over a network, where the program expects a buffer to exist but finds a null or non-existent reference instead.
The solution to this error would involve ensuring that before attempting operations that require a buffer, the buffer is properly initialized. This could mean allocating memory for the buffer if you're working in a language that requires manual memory management, or simply making sure to assign a buffer object before usage in languages that handle memory automatically.