I cannot delete a column

Unable to delete row from table 'Students'. → This change cannot be applied because there is a newer version of your app 'Monitoring'. Please reset data to discard local changes.
It says like this, and I ensure that all the data types are correct as well as the rows, and still I cannot delete for a specific student, whereas if I delete their attendance it will be deleted but in the case that I want to delete a student, it has its error prompt above

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