Typeerror: cannot read properties of null (reading ‘usestate’)

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Error: TypeError: Cannot read properties of null (reading ‘useState’)

Above error occurs when trying to access the ‘useState’ property of a null value.

Explanation:

In React, ‘useState’ is a hook used to add state to functional components. It allows you to declare state variables in your component.

When you encounter this error, it means that you are trying to access the ‘useState’ property on a null value. This can happen when you mistakenly initialize a variable or state with ‘null’ and then try to update its state using ‘useState’.

Example:

   
import React, { useState } from 'react';

function MyComponent() {
   // Incorrect initialization
   let myVariable = null;

   // Accessing useState on null value (throws an error)
   const [state, setState] = useState(myVariable);

   // ...
}

export default MyComponent;

In the above example, the ‘myVariable’ is initialized with ‘null’, and it is then passed to the ‘useState’ hook. This will throw the mentioned error since ‘useState’ expects an initial state value.

Solution:

To fix this error, make sure you initialize your variable or state with a valid initial value instead of ‘null’.

   
import React, { useState } from 'react';

function MyComponent() {
   // Correct initialization
   let myVariable = "initial value";

   // Accessing useState with valid initial value
   const [state, setState] = useState(myVariable);

   // ...
}

export default MyComponent;

In the updated example, ‘myVariable’ is initialized with a valid initial value (“initial value”), and it is then passed to the ‘useState’ hook without causing any error.

Make sure to double-check your code and ensure that you are not trying to access ‘useState’ on null values.

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