error/moodle/confirmsesskeybad
From MoodleDocs
This error occurs when you have an invalid unique session key. This is usually caused by hard-coding a Moodle URL into your course / site or by an attempt to circumvent the session key
Note: You are currently viewing documentation for Moodle 4.0. Up-to-date documentation for the latest stable version of Moodle may be available here: error/moodle/confirmsesskeybad.
This error occurs when you have an invalid unique session key. This is usually caused by hard-coding a Moodle URL into your course / site or by an attempt to circumvent the session key
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