Notice: Undefined index: in options-framework.php

Most likely you have an undefined array index. You can check if the array index exists with isset() like this:

if(isset($some_array[$some_index])){

}

So check all your arrays in the options-framework.php file.

You can try for example:

if ( isset($option['type']) && isset($input[$id]) && has_filter( 'of_sanitize_' . $option['type'] ) ) {
        $clean[$id] = apply_filters( 'of_sanitize_' . $option['type'],   $input[$id], $option );
}