Getting Uncaught TypeError: path.split is not a function in react

react-hook-form updated to 7.0.0 from 6.X.X and has breaking changes:

You have to replace all ref={register} with {...register('value_name')}

Example:

Version 6.X.X:

<input ref={register({ required: true })} name="test" />

Version 7.0.X:

<input {...register('test', { required: true })} />