Sequelize seed validation error

When running

npx sequelize-cli db:seed:all

it fails with

ERROR: Validation error

We can run with --debug to see

ERROR: Error
    at Query.run (/home/joseph/workspace/Bookkeeping/node_modules/sequelize/lib/dialects/mariadb/query.js:53:25)
    at /home/joseph/workspace/Bookkeeping/node_modules/sequelize/lib/sequelize.js:315:28
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async MySQLQueryInterface.bulkInsert (/home/joseph/workspace/Bookkeeping/node_modules/sequelize/lib/dialects/abstract/query-interface.js:346:21)
    at async Promise.all (index 0)
    at async /home/joseph/workspace/Bookkeeping/node_modules/sequelize/lib/sequelize.js:507:18
EXTRA MESSAGE: (conn=9, no: 1062, SQLState: 23000) Duplicate entry '1' for key 'PRIMARY'
sql: INSERT INTO `users` (`id`,`external_id`,`name`) VALUES (1,1,'John Doe'),(2,456,'Jan Jansen'); - parameters:[]

In this case, we can see there already exists