Replaced deprecated method addError with addErrorMessage

[VinothKumar361]

Description (*)

This Pull request replaces the deprecated addError method with addErrorMessage method

Related Pull Requests

Fixed Issues (if relevant)

1. Fixes magento/magento2#<issue_number>

Manual testing scenarios (*)

1. ...
2. ...

Questions or comments

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds are green)

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[VinothKumar361]

@magento run all tests

[edenduong]

@magento run all tests

[edenduong]

Hi @VinothKumar361 : Could you please check the static tests? Thank you !

[edenduong]

Thank you for your contribution. Please fix the static test.

[m2-assistant]

Hi @VinothKumar361, thank you for your contribution!
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[engcom-Alfa]

Hi @VinothKumar361 . During testing, we faced the issue.

Manual testing scenario:

1. Create customer and subscribe to newsletters;
2. Go to Admin -> Marketing -> Newsletter Subscribers;
3. Select the subscriber's checkbox;
4. Select Unsubscribe from the dropdown mass action menu;
5. Click on Submit button;

Actual Result: ✖️ 404 error message received

@VinothKumar361 Could you take a look?

Thanks!

Pull Request state was updated. Re-review required.

[engcom-Echo]

Hi @engcom-Alfa, the bug fixed. Thank you.

[engcom-Echo]

Hi @edenduong. Please approve again to deliver the PR for testing. Thanks.

[engcom-Echo]

@magento run all tests

[engcom-Echo]

@magento run all tests

[magento-engcom-team]

Hi @sidolov, thank you for the review.
ENGCOM-7951 has been created to process this Pull Request

[m2-assistant]

Hi @VinothKumar361, thank you for your contribution!
Please, complete Contribution Survey, it will take less than a minute.
Your feedback will help us to improve contribution process.