The 'badarg' error in Elixir usually occurs when a function receives an argument that it cannot process. This can be due to incorrect types, out-of-range values, or inappropriate data structures. Check your input values and ensure they meet the function's requirements.

The 'badarg' error in Elixir is often an indication that a function has been called with arguments that are not valid or appropriate for that function. This type of error can arise in various scenarios, such as when you pass the wrong data type, provide an out-of-range value, or supply data structures that do not match expected formats. To troubleshoot this issue, you should start by reviewing the stack trace provided with the error message. The stack trace can give you insights into where the error occurred, helping you pinpoint the problematic function call. Next, examine the arguments you are passing to the function. Are they the correct data types? For example, if the function expects an integer but receives a string, you will encounter a 'badarg' error. Additionally, ensure that any data structures (like lists or tuples) are correctly formatted and contain valid values. It may also be useful to implement validation checks before calling functions to catch potential issues early. You can use pattern matching or guards to validate inputs. By systematically checking your inputs and using error handling mechanisms, you can effectively resolve 'badarg' errors and improve the robustness of your Elixir application.