OJS 3.4.0.1 - Fatal error occurs when Reviewer submit (complete ) the review

Hello,
We have noticed another fatal error in the error log

[29-Jul-2023 15:57:29 UTC] PHP Fatal error: Uncaught Error: Call to a member function getLocalizedData() on null in /home/seisense/journal.seisense.com/lib/pkp/classes/submission/reviewer/form/PKPReviewerReviewStep3Form.php:223
Stack trace:
#0 /home/seisense/journal.seisense.com/lib/pkp/pages/reviewer/PKPReviewerHandler.php(141): PKP\submission\reviewer\form\PKPReviewerReviewStep3Form->execute()
#1 [internal function]: PKP\pages\reviewer\PKPReviewerHandler->saveStep()
#2 /home/seisense/journal.seisense.com/lib/pkp/classes/core/PKPRouter.php(334): call_user_func()
#3 /home/seisense/journal.seisense.com/lib/pkp/classes/core/PKPPageRouter.php(277): PKP\core\PKPRouter->_authorizeInitializeAndCallRequest()
#4 /home/seisense/journal.seisense.com/lib/pkp/classes/core/Dispatcher.php(165): PKP\core\PKPPageRouter->route()
#5 /home/seisense/journal.seisense.com/lib/pkp/classes/core/PKPApplication.php(373): PKP\core\Dispatcher->dispatch()
#6 /home/seisense/journal.seisense.com/index.php(21): PKP\core\PKPApplication->execute()
#7 {main}
thrown in /home/seisense/journal.seisense.com/lib/pkp/classes/submission/reviewer/form/PKPReviewerReviewStep3Form.php on line 223

This happens when reviewer complete the review and press submit button. Wheel keep spinning without any any end to it. Reviewer need to close the page. During this whole process the review is submitted successfully but without any notification email to the editor.

Thanks and looking forward to possible solution
seisense

A github issue already registered at [OJS upgrade from 3_3_0_14 to 3_4_0_1] REVIEW_COMPLETE email template seems to be not installed · Issue #9109 · pkp/pkp-lib · GitHub for it and a fix should be included into next release(3.4.0-2) .