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

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The “TypeError: Cannot read properties of null (reading ‘useContext’)” error occurs when we try to access a property or method of a null value in the useContext hook in React.

The useContext hook is used to access the value of a context in a functional component. It allows us to subscribe to a context and access its value without wrapping the component in a Context.Consumer component.

Here is an example where the error can occur: 


    import React, { useContext } from 'react';

    const MyComponent = () => {
      const contextValue = useContext(MyContext); // Assuming MyContext is null

      return (
        <div>
          <p>{contextValue}</p>
        </div>
      );
    };

    export default MyComponent;

In the above example, assuming that MyContext is null or not provided correctly, the useContext hook will throw the “TypeError: Cannot read properties of null (reading ‘useContext’)” error when trying to access the contextValue.

To fix this error, make sure that the context being used in the useContext hook is a valid context object and is properly provided. Here is an example of how to correctly use the useContext hook: 


    import React, { createContext, useContext } from 'react';

    const MyContext = createContext();

    const MyComponent = () => {
      const contextValue = useContext(MyContext);

      return (
        <div>
          <p>{contextValue}</p>
        </div>
      );
    };

    export default MyComponent;

In the above example, we create a context using the createContext function and provide it to the component tree using a Context.Provider component. Then, inside the MyComponent component, we can access the value of MyContext using the useContext hook without any errors.

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