[wp-trac] [WordPress Trac] #59584: Deactivate older versions of Gutenberg plugin when upgrading to WP 6.4

[WordPress Trac]

#59584: Deactivate older versions of Gutenberg plugin when upgrading to WP 6.4
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 Reporter:  hellofromTonya   |       Owner:  (none)
     Type:  defect (bug)     |      Status:  new
 Priority:  normal           |   Milestone:  6.4
Component:  Upgrade/Install  |     Version:  trunk
 Severity:  normal           |  Resolution:
 Keywords:  needs-testing    |     Focuses:
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Comment (by hellofromTonya):

 Findings:

 Installing and activating Gutenberg 16.3.0 causes a fatal error during its
 activation:

 >PHP Fatal error:  Access level to
 Gutenberg_REST_Global_Styles_Controller_6_2::validate_custom_css() must be
 protected (as in class WP_REST_Global_Styles_Controller) or weaker in
 /../public/wp-content/plugins/gutenberg/lib/compat/wordpress-6.2/class-
 gutenberg-rest-global-styles-controller-6-2.php on line 217

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Ticket URL: <https://core.trac.wordpress.org/ticket/59584#comment:1>
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