[wp-trac] [WordPress Trac] #43124: Cannot read property 'action' of null

[WordPress Trac]

#43124: Cannot read property 'action' of null
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 Reporter:  subratamal                  |      Owner:
     Type:  defect (bug)                |     Status:  new
 Priority:  normal                      |  Milestone:  Awaiting Review
Component:  General                     |    Version:  4.9.2
 Severity:  normal                      |   Keywords:
  Focuses:  javascript, administration  |
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 In WP Backend there is a javascript error.

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Ticket URL: <https://core.trac.wordpress.org/ticket/43124>
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