Appium tests - Failed to start a session

paramedic-appium: Running tests from:
paramedic-appium: ../../../../../../../var/folders/nd/5vd2nqsn3tlc6kljds0c95200000gp/T/tmp-96089fiESl1XTu8c2/plugins/cordova-plugin-contacts/appium-tests/common/*.spec.js
Spec started

  1 Contacts Android
    ✗ contacts.ui.util configuring driver and starting a session
      - Error: Timeout - Async callback was not invoked within timeout specified by jasmine.DEFAULT_TIMEOUT_INTERVAL.

    1.1 Picking contacts
      ✗ contacts.ui.spec.1 Pick a contact
        - Failed: Failed to start a session
        - Failed: Failed to start a session
      ✗ contacts.ui.spec.2 Update an existing contact
        - Failed: Failed to start a session
        - Failed: Failed to start a session
      ✗ contacts.ui.spec.3 Create a contact with no name
        - Failed: Failed to start a session
        - Failed: Failed to start a session
      ✗ contacts.ui.spec.4 Create a contact with Unicode characters in name
        - Failed: Failed to start a session
        - Failed: Failed to start a session

    ✗ contacts.ui.util Destroy the session
      - Failed: Failed to start a session

**************************************************
*                    Failures                    *
**************************************************

1) Contacts Android contacts.ui.util configuring driver and starting a session
  - Error: Timeout - Async callback was not invoked within timeout specified by jasmine.DEFAULT_TIMEOUT_INTERVAL.

2) Contacts Android Picking contacts contacts.ui.spec.1 Pick a contact
  - Failed: Failed to start a session
  - Failed: Failed to start a session

3) Contacts Android Picking contacts contacts.ui.spec.2 Update an existing contact
  - Failed: Failed to start a session
  - Failed: Failed to start a session

4) Contacts Android Picking contacts contacts.ui.spec.3 Create a contact with no name
  - Failed: Failed to start a session
  - Failed: Failed to start a session

5) Contacts Android Picking contacts contacts.ui.spec.4 Create a contact with Unicode characters in name
  - Failed: Failed to start a session
  - Failed: Failed to start a session

6) Contacts Android contacts.ui.util Destroy the session
  - Failed: Failed to start a session

Executed 6 of 6 specs (6 FAILED) in 5 mins.
Completed tests at 3:33:19 AM
cordova-paramedic: Deleting the application: /var/folders/nd/5vd2nqsn3tlc6kljds0c95200000gp/T/tmp-96089fiESl1XTu8c2
/Users/jenkins/jenkins/workspace/cordova-periodic-build
Getting saucelabs jobs details...

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Job name: jenkins-cordova-periodic-build-PLATFORM=ios,PLUGIN=cordova-plugin-contacts-105_Appium
Job ID: 886a089f2adf45d3969bfd1b5d06ef04
Job URL: https://saucelabs.com/beta/tests/886a089f2adf45d3969bfd1b5d06ef04
Video: https://saucelabs.com/jobs/886a089f2adf45d3969bfd1b5d06ef04/video.flv
Appium logs: https://saucelabs.com/jobs/886a089f2adf45d3969bfd1b5d06ef04/selenium-server.log
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Job name: jenkins-cordova-periodic-build-PLATFORM=ios,PLUGIN=cordova-plugin-contacts-105_Appium
Job ID: 4b16d4368f7c4bada8b195dfab881e2a
Job URL: https://saucelabs.com/beta/tests/4b16d4368f7c4bada8b195dfab881e2a
Video: https://saucelabs.com/jobs/4b16d4368f7c4bada8b195dfab881e2a/video.flv
Appium logs: https://saucelabs.com/jobs/4b16d4368f7c4bada8b195dfab881e2a/selenium-server.log
============================================================================================

============================================================================================
Job name: jenkins-cordova-periodic-build-PLATFORM=ios,PLUGIN=cordova-plugin-contacts-105
Job ID: 8ba4e9f53da1474ba16b596211108d6b
Job URL: https://saucelabs.com/beta/tests/8ba4e9f53da1474ba16b596211108d6b
Video: https://saucelabs.com/jobs/8ba4e9f53da1474ba16b596211108d6b/video.flv
Appium logs: https://saucelabs.com/jobs/8ba4e9f53da1474ba16b596211108d6b/selenium-server.log
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Finished with exit code 1
Build step 'Execute shell' marked build as failure
Recording test results
Archiving artifacts
Finished: FAILURE