Error message

• The MailChimp PHP library is missing the required GuzzleHttp library. Please check the installation notes in README.txt.
• Notice: Trying to get property of non-object in mailchimp_signup_subscribe_form() (line 326 of /home/qobolaknew/public_html/sites/all/modules/mailchimp/modules/mailchimp_signup/mailchimp_signup.module).
• Notice: Trying to get property of non-object in mailchimp_signup_subscribe_form() (line 332 of /home/qobolaknew/public_html/sites/all/modules/mailchimp/modules/mailchimp_signup/mailchimp_signup.module).
• Warning: Attempt to assign property of non-object in mailchimp_signup_subscribe_form() (line 332 of /home/qobolaknew/public_html/sites/all/modules/mailchimp/modules/mailchimp_signup/mailchimp_signup.module).
• Notice: Trying to get property of non-object in mailchimp_insert_drupal_form_tag() (line 1564 of /home/qobolaknew/public_html/sites/all/modules/mailchimp/mailchimp.module).
• Notice: Trying to get property of non-object in mailchimp_insert_drupal_form_tag() (line 1565 of /home/qobolaknew/public_html/sites/all/modules/mailchimp/mailchimp.module).
• Notice: Trying to get property of non-object in mailchimp_insert_drupal_form_tag() (line 1566 of /home/qobolaknew/public_html/sites/all/modules/mailchimp/mailchimp.module).
• Notice: Trying to get property of non-object in mailchimp_insert_drupal_form_tag() (line 1569 of /home/qobolaknew/public_html/sites/all/modules/mailchimp/mailchimp.module).
• Notice: Trying to get property of non-object in mailchimp_insert_drupal_form_tag() (line 1570 of /home/qobolaknew/public_html/sites/all/modules/mailchimp/mailchimp.module).
• Notice: Trying to get property of non-object in mailchimp_insert_drupal_form_tag() (line 1578 of /home/qobolaknew/public_html/sites/all/modules/mailchimp/mailchimp.module).
• Notice: Trying to get property of non-object in mailchimp_insert_drupal_form_tag() (line 1685 of /home/qobolaknew/public_html/sites/all/modules/mailchimp/mailchimp.module).