After following the readme.cmd, test can't be excecuted due to error cy.task('db:seed') failed with the following error:

[bdiop18]

Hello, Thank you for sharing the app realword for testing. I meet an error and I am blocking to continue with error :
cy.task('db:seed') failed with the following error:Request failed with status code 415

2 | describe("User Sign-up and Login", function () {
3 | beforeEach(function () {

4 **

| cy.task("db:seed");

** //Cypress highlited here error ?
| ^
5 | cy.server();
6 | cy.route("POST", "/users").as("signup");
7 | cy.route("POST", "/bankAcco

Just to note the code application has not be changed and I don't know why all tests failed on this step