Drupal 9 Deprecated Code Report

Problem/Motivation

drupal-check results on commit hash:
source : [git] https://git.drupal.org/project/email_registration f6767d8981ca64452b75d6726db82b9ca43d3b5c
source : http://cgit.drupalcode.org/email_registration

------ ---------------------------------------------
Line email_registration.module
------ ---------------------------------------------
118 Call to deprecated method strlen() of class
Drupal\Component\Utility\Unicode.
118 Call to deprecated method substr() of class
Drupal\Component\Utility\Unicode.
------ ---------------------------------------------

------ -------------------------------------------------------------------
Line src/Plugin/Commerce/CheckoutPane/EmailRegistrationLogin.php
------ -------------------------------------------------------------------
Class Drupal\commerce_checkout\Plugin\Commerce\CheckoutPane\Login
not found and could not be autoloaded.
------ -------------------------------------------------------------------

------ ----------------------------------------------------
Line tests/src/Functional/EmailRegistrationTestCase.php
------ ----------------------------------------------------
49 Call to deprecated method assertRaw() of class
Drupal\Tests\BrowserTestBase.
56 Call to deprecated method assertText() of class
Drupal\Tests\BrowserTestBase.
57 Call to deprecated method assertText() of class
Drupal\Tests\BrowserTestBase.
58 Call to deprecated method assertNoText() of class
Drupal\Tests\BrowserTestBase.
70 Call to deprecated method assertText() of class
Drupal\Tests\BrowserTestBase.
71 Call to deprecated method assertText() of class
Drupal\Tests\BrowserTestBase.
73 Call to deprecated method assertRaw() of class
Drupal\Tests\BrowserTestBase.
87 Call to deprecated method assertRaw() of class
Drupal\Tests\BrowserTestBase.
------ ----------------------------------------------------

[ERROR] Found 11 errors

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet