What does the error message "Invalid Argument" mean when trying to save a file in RStudio?

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The error message "Invalid Argument" when trying to save a file in RStudio means that there is an issue with one or more arguments (e.g., file name, path, format) provided to the function that attempts to save the file. It could be due to an incorrect file name or path, unsupported file format, or permissions issue. Checking the arguments and ensuring that they are correct and valid should resolve the issue.