Error FAILED_TO_CREATE_USER with code 42703 when trying to create a new user

const register = await authClient.signUp.email({
            email: values.email,
            name: values.username,
            password: values.password,
            callbackURL: "/",
        }, {
            onRequest: (ctx) => {
                setLoading(true);
                console.log(ctx)
            },
            onError: (ctx) => {
                setLoading(false);
                console.log(ctx)
            }
        });

{response: Response, responseText: '{"code":"FAILED_TO_CREATE_USER","message":"Failed …c","line":"1065","routine":"checkInsertTargets"}}', request: {…}, error: {…}}