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---
title: "TypeError: More arguments needed"
slug: Web/JavaScript/Reference/Errors/More_arguments_needed
page-type: javascript-error
---
{{jsSidebar("Errors")}}
The JavaScript exception "more arguments needed" occurs when there is an error with how
a function is called. More arguments need to be provided.
## Message
```plain
TypeError: Object prototype may only be an Object or null: undefined (V8-based)
TypeError: Object.create requires at least 1 argument, but only 0 were passed (Firefox)
TypeError: Object.setPrototypeOf requires at least 2 arguments, but only 0 were passed (Firefox)
TypeError: Object.defineProperties requires at least 1 argument, but only 0 were passed (Firefox)
TypeError: Object prototype may only be an Object or null. (Safari)
```
## Error type
{{jsxref("TypeError")}}.
## What went wrong?
There is an error with how a function is called. More arguments need to be provided.
## Examples
### Required arguments not provided
The {{jsxref("Object.create()")}} method requires at least one argument and the
{{jsxref("Object.setPrototypeOf()")}} method requires at least two arguments:
```js example-bad
const obj = Object.create();
// TypeError: Object.create requires at least 1 argument, but only 0 were passed
const obj2 = Object.setPrototypeOf({});
// TypeError: Object.setPrototypeOf requires at least 2 arguments, but only 1 were passed
```
You can fix this by setting [`null`](/en-US/docs/Web/JavaScript/Reference/Operators/null) as the prototype, for example:
```js example-good
const obj = Object.create(null);
const obj2 = Object.setPrototypeOf({}, null);
```
## See also
- [Functions](/en-US/docs/Web/JavaScript/Guide/Functions) guide