When upgrading from Fleet 2.6 to 3 there seems to be an issue with the db migration for mysql. the following error is produced.

################################################################################
# WARNING:
#   Your Fleet database is missing required migrations. This is likely to cause
#   errors in Fleet.
#
#   Run `./fleet prepare db` to perform migrations.
################################################################################

Then when attempting to run the migration

################################################################################
# WARNING:
#   This will perform Fleet database migrations. Please back up your data before
#   continuing.
#
#   Press Enter to continue, or Control-c to exit.
################################################################################
2020/08/18 18:11:49 FAIL 20200512120000_CreateTableEnrollSecrets.go (create enroll_secrets table: Error 1050: Table 'enroll_secrets' already exists), quitting migration.

Any help would be great.

I just upgraded my dev instance from 2.6.0 to 3.0.0 and did not have any issues