devicelog_16.js

render(){
    return(
        <div>
            ...
            <form onSubmit={this.onSubmit}>
            ...
                <div className="form-group"> 
                    <label>Description: </label>
                    <input type="text"
                        required
                        className="form-control"
                        value={this.state.description}
                        onChange={this.onChangeDescription}
                        />
                </div>
            ...
            </form>
        </div>
    );
};