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attempt to perform arithmetic on a nil value

❌ Error​

attempt to perform arithmetic on a nil value (field 'xyz')

📍 Context​

Happens when trying to add, subtract, multiply, or divide a variable that is nil. Common with player money, inventory counts, or job data.

✅ Solution​

  • Initialize variables before arithmetic operations: local value = myValue or 0
  • Ensure that callbacks or database queries return valid numbers.

ℹ️ Additional Information​

  • Can occur both clientside and serverside.
  • Useful to enforce default values for all numeric fields.