error/debug/cannotdowngrade

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This error occurs when a new version of a add-on has been installed at some point and then has been replace by an older version of the same add-on.

In this scenario you need to determine what has caused this to happen:

  • It might be that you've accidentally tried to install a version compatible with older versions of Moodle. In this case, check the Moodle plugins database for the correct version with your Moodle and install this
  • It could also be that the plugin is defective - in this case you should try to contact the plugin author, using the Moodle forums for example.