Answers.Body: <p>Do you have pid supplied as param in cancel/transfer url? Does the requested participant has event id attached? Does this error is consistent?</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-10-19T20:18:07.993Z
Answers.Text: The pid's are included in the cancel/transfer url, and the error is consistent; I believe that the answer to your middle question is yes.
  
  It was suggested by a CivicCRM contributor that this issue might be a breaking change in CiviCRM WP v5.29 and 5.30.0 but I can't confirm that it's true as I haven't seen any posts referring to this.
Answers.UserDisplayName: Eric Swanzey
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-10-19T20:24:08.523Z
Answers.Text: I should have indicated that this installation is CiviCRM v5.30.0 on WP 5.5.1
Answers.UserDisplayName: Eric Swanzey
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-10-19T16:47:57.823Z
Answers.LastActivityDate: 2020-10-19T16:47:57.823Z
Answers.UserDisplayName: Pradeep Nayak
Body: <p>Here is backtrace:</p>
  <pre><code>0   CRM_Core_DAO::getFieldValue('CRM_Event_DAO_Ev…', null, 'title') /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Event/Form/SelfSvcUpdate.php:132
  1   CRM_Event_Form_SelfSvcUpdate-&gt;preProcess()  /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Form.php:602
  2   CRM_Core_Form-&gt;buildForm()  /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/QuickForm/Action/Display.php:76
  3   CRM_Core_QuickForm_Action_Display-&gt;perform(Object(CRM_Event_Form_SelfSvcUpdate), 'display') /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/packages/HTML/QuickForm/Controller.php:203
  4   HTML_QuickForm_Controller-&gt;handle(Object(CRM_Event_Form_SelfSvcUpdate), 'display')  /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/packages/HTML/QuickForm/Page.php:103
  5   HTML_QuickForm_Page-&gt;handle('display')  /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Controller.php:347
  6   CRM_Core_Controller-&gt;run()  /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Utils/Wrapper.php:98
  7   CRM_Utils_Wrapper-&gt;run('CRM_Event_Form_S…', 'Self-service Reg…', Array) /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Invoke.php:285
  8   CRM_Core_Invoke::runItem(Array) /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Invoke.php:68
  9   CRM_Core_Invoke::_invoke(Array) /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Invoke.php:36
  10  CRM_Core_Invoke::invoke(Array)  /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm.php:1644
  11  CiviCRM_For_WordPress-&gt;invoke() /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/includes/civicrm.basepage.php:352
  12  CiviCRM_For_WordPress_Basepage-&gt;basepage_handler(Object(WP))    /home/bbcadmin2016/public_html/wp-includes/class-wp-hook.php:287
  13  WP_Hook-&gt;apply_filters(null, Array) /home/bbcadmin2016/public_html/wp-includes/class-wp-hook.php:311
  14  WP_Hook-&gt;do_action(Array)   /home/bbcadmin2016/public_html/wp-includes/plugin.php:544
  15  do_action_ref_array('wp', Array)    /home/bbcadmin2016/public_html/wp-includes/class-wp.php:758
  16  WP-&gt;main('')    /home/bbcadmin2016/public_html/wp-includes/functions.php:1285
  17  wp()    /home/bbcadmin2016/public_html/wp-blog-header.php:16
  18  require('/home/bbcadmin20…')    /home/bbcadmin2016/public_html/index.php:17
  19  {main}   
  </code></pre>
  
Tags: <civievent><error>
Title: Event registrant cancel/transfer error - getFieldValue failed - in SelfSvcUpdate.php
ThreadText: # Event registrant cancel/transfer error - getFieldValue failed - in SelfSvcUpdate.php
  
  (Asked by: username_0 on 2020-10-19)
  
  Here is backtrace:
  0   CRM_Core_DAO::getFieldValue('CRM_Event_DAO_Ev…', null, 'title') /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Event/Form/SelfSvcUpdate.php:132
  1   CRM_Event_Form_SelfSvcUpdate->preProcess()  /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Form.php:602
  2   CRM_Core_Form->buildForm()  /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/QuickForm/Action/Display.php:76
  3   CRM_Core_QuickForm_Action_Display->perform(Object(CRM_Event_Form_SelfSvcUpdate), 'display') /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/packages/HTML/QuickForm/Controller.php:203
  4   HTML_QuickForm_Controller->handle(Object(CRM_Event_Form_SelfSvcUpdate), 'display')  /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/packages/HTML/QuickForm/Page.php:103
  5   HTML_QuickForm_Page->handle('display')  /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Controller.php:347
  6   CRM_Core_Controller->run()  /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Utils/Wrapper.php:98
  7   CRM_Utils_Wrapper->run('CRM_Event_Form_S…', 'Self-service Reg…', Array) /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Invoke.php:285
  8   CRM_Core_Invoke::runItem(Array) /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Invoke.php:68
  9   CRM_Core_Invoke::_invoke(Array) /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Invoke.php:36
  10  CRM_Core_Invoke::invoke(Array)  /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/civicrm.php:1644
  11  CiviCRM_For_WordPress->invoke() /home/bbcadmin2016/public_html/wp-content/plugins/civicrm/includes/civicrm.basepage.php:352
  12  CiviCRM_For_WordPress_Basepage->basepage_handler(Object(WP))    /home/bbcadmin2016/public_html/wp-includes/class-wp-hook.php:287
  13  WP_Hook->apply_filters(null, Array) /home/bbcadmin2016/public_html/wp-includes/class-wp-hook.php:311
  14  WP_Hook->do_action(Array)   /home/bbcadmin2016/public_html/wp-includes/plugin.php:544
  15  do_action_ref_array('wp', Array)    /home/bbcadmin2016/public_html/wp-includes/class-wp.php:758
  16  WP->main('')    /home/bbcadmin2016/public_html/wp-includes/functions.php:1285
  17  wp()    /home/bbcadmin2016/public_html/wp-blog-header.php:16
  18  require('/home/bbcadmin20…')    /home/bbcadmin2016/public_html/index.php:17
  19  {main}
  
  **Tags:** civievent, error
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2020-10-19. Score: 0
  
  Do you have pid supplied as param in cancel/transfer url? Does the requested participant has event id attached? Does this error is consistent?
  
  > **Comments:**
  > **username_0**: The pid's are included in the cancel/transfer url, and the error is consistent; I believe that the answer to your middle question is yes.  It was suggested by a CivicCRM contributor that this issue might be a breaking change in CiviCRM WP v5.29 and 5.30.0 but I can't confirm that it's true as I haven't seen any posts referring to this.  
  > **username_0**: I should have indicated that this installation is CiviCRM v5.30.0 on WP 5.5.1  
  
  ---
  
  