flyway commands fail without explanation

[edu05]

Error: Unable to migrate {"url":"jdbc:postgresql://postgres:6678/mydb","user":"myuser","password":"xxx","defaultSchema":"public","migrationLocations":["src/flyway/migrations"]} {"errorCode":"UNABLE_TO_PARSE_RESPONSE","message":"Command successful but unable to parse Flyway response."}

this is from a docker container
the command was not successful as I checked in the db
other commands like clean and baseline also fail