3 Undefined index errors.

Since Easyship has been no help on this issue, I took it upon myself to learn how to fix it myself here are the instructions for anyone that wants to getting these 3 Undefined Index errors in their debug log.

Open and edit plugin code: /wp-content/plugins/easyship-woocommerce-shipping-rates/includes/easyship-api.php

Find line 29: public static function init($token = null)

Replace lines 29-59 with the following:

    public static function init($token = null) {
        $Easyship_Shipping_Method = new Easyship_Shipping_Method();
        if(isset($Easyship_Shipping_Method->settings['es_api_key'])) {
            self::$apikey = trim( esc_attr( $Easyship_Shipping_Method->settings['es_api_key'] ), " " );
        }
        if(isset($Easyship_Shipping_Method->settings['es_api_key'])) {
            self::$apiSecret = str_replace( '\n', "\n", $Easyship_Shipping_Method->settings['es_api_secret'] );
        }
        // if incoterms/insurance already exist on WC, send it with API
        self::$is_insured = 0;
        if(isset($Easyship_Shipping_Method->settings['es_api_key'])) {
            self::$taxes_duties_paid_by = $Easyship_Shipping_Method->settings['es_taxes_duties'];
        }
        self::$_currency = get_woocommerce_currency();
        // feature/access_token
        if (!is_null($token)) {
            self::$accessToken = trim(esc_attr($token), " ");
        } else {
            $token_option_name = 'es_access_token_' . get_current_network_id();
            self::$accessToken = trim(esc_attr(get_option($token_option_name)), " ");
        }

        // sandbox mode
        // if ( $Easyship_Shipping_Method->settings['es_sandbox_mode'] == 'yes' ) {
        //     self::$oauth_url = "https://auth-sandbox.easyship.com/oauth2/token";
        //     self::$api_url = "https://api-sandbox.easyship.com/rate/v1/woocommerce";
        // }
        if ((self::$apikey == '' || self::$apiSecret == '') && self::$accessToken == '') {
            throw new Exception('Missing API Key and API Secret OR Access Token!');
        }
    }

Your done no more undefined index errors. Note that since this is an edit to the code, you will have to redo it every time Easyship updates their plugin unless they see this and actually fix in their distribution of the plugin.