× TypeError: this.props.onSubmit is not a function

import React from 'react';


class SearchBar extends React.Component{
    state = {term: ''};  
    onFormSubmit= (event)=> {  
        event.preventDefault();
        
        this.props.onSubmit(this.state.term);
    };

    
    render() {
        return (
        <div className="ui segment">
            <form onSubmit={this.onFormSubmit} className="ui form" >
                <div className = "field">
                <label>Image Search</label>
                <input  type ="text"  value ={this.state.term} onChange={e => this.setState({term: e.target.value })} /> 
                </div>
            </form>
        </div>
        );
    }

}
 
export default SearchBar;