robotframework：无法找到文件夹外的关键字

问：

folder structure

Project
  |
  |_ _folder1  (abc.robot)
  |
  |_ _folder2  (def.robot)
  |      |_ _ folder3 (ghi.robot)
  |
  |
  |
  setup.robot

文件夹 1 abc.robot 内部

#abc.robot 
#create session api call

*** Settings ***
Library     RequestsLibrary
Resource    /setup.robot

Post_new_user
    create session    newsession        ${url}
    ${body}=    create dictionary      mobile_prefix=${mobile_prefix}   mobile_number=${mobile_number}
    ${headers}=  create dictionary     Content-Type=application/json
    ${response}=    post request    newsession      newuser/register      data=${body}     headers=${headers}

    #validations
    ${status_code}=     convert to string    ${response.status_code}
    should be equal    ${status_code}       200

在文件夹2 def.robot

#def.robot
#test data driven with robot

*** Settings ***
Resource    ../../ghi.robot
Test Template  Registration Test

*** Test Cases ***
test1       +12     9999999991
test2       +12     9999999992
test3       +12     9999999993


*** Keywords ***
Registration Test
    [Arguments]    ${mobile_prefix}     ${mobile_number}
    a mobile prefix ${mobile_prefix}
    a mobile number ${mobile_number}
    Post_new_user

文件夹内3

#ghi.robot
#set of keywords / steps to call

*** Keywords ***
a mobile prefix ${mobile_prefix}
    set test variable  ${mobile_prefix}  ${mobile_prefix}

a mobile number ${mobile_number}
    set test variable  ${mobile_number}  ${mobile_number}

step.机器人

*** Variable ***
${url}=     https://example/com

使用机器人框架的测试数据驱动程序 但是当 def.robot 运行时 文件的位置总是有问题

1. 资源文件“\setup.robot”不存在。
2. 资源文件“ghi.robot”不存在。
3. 未找到名称为“a mobile prefix ${mobile_prefix}”的关键字。

我错过了什么吗？