I can't delete any context

[diegodblr]

Dear GLPi user.

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The Plugin team.

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• Version of the plugin :
  1.6.2

• Version of your GLPI :
  9.5.7

• Steps to reproduce (which actions have you made) :

Config -> Dropdown Lists -> Task List -> Contexts

• Expected result :

I expected to delete some Contexts

• Actual result :

I can't delete any context

• URL of the page :

• Screenshot of the problem (if pertinent) :