自定义消息接口——编译功能包报错

[378718608]

跟着小鱼老师的文档 1.控制OLED-自定义消息接口 操作下来，在2.2编译功能包的时候报错：

ros2@ros2-virtual-machine:~/example14_custom_interface/extra_packages$ colcon build
Starting >>> fishbot_interfaces
--- stderr: fishbot_interfaces                         
CMake Error at /opt/ros/humble/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:93 (message):
  rosidl_generate_interfaces() the passed file 'srv/OledControl.srv' doesn't
  exist relative to the CMAKE_CURRENT_SOURCE_DIR
  '/home/ros2/example14_custom_interface/extra_packages/fishbot_interfaces'
Call Stack (most recent call first):
  CMakeLists.txt:28 (rosidl_generate_interfaces)


---
Failed   <<< fishbot_interfaces [1.86s, exited with code 1]

Summary: 0 packages finished [2.46s]
  1 package failed: fishbot_interfaces
  1 package had stderr output: fishbot_interfaces

请问怎么解决？

[小鱼]

@378718608 细心点 src?srv
另外先看看发帖前必看

[378718608]

@小鱼 谢谢小鱼老师，我在srv下创建了.srv接口文件，编译时遇到了一个错误，我看了之前的帖子，按照解决方法在package.xml添加了

<build_depend>rosidl_default_generators</build_depend>
  <exec_depend>rosidl_default_runtime</exec_depend>
  <member_of_group>rosidl_interface_packages</member_of_group>

但是VSCode提示了一个错误：

提示是这样：

Element name 'test_depend' is invalid.

One of the following is expected:
 - member_of_group
 - export

Error indicated by:
 {the schema}
with code:xml(cvc-complex-type.2.4.a)

然后我把这三行代码放到了下面，不报错：

编译也成功了。继续按文档往下操作：重新编译工程，编写代码上传到开发板（我把接口文件和main都改成了两数相加的案例），启动Agent，也连通了，但是测试的时候给了这样的提示：

The passed service type is invalid

请问怎么解决？

[小鱼]

@378718608 电脑段先colcon build

[1628799315]

@378718608 解决了吗啊？ 我也遇到啦
ros2 pkg create --build-type ament_cmake tutorial_interfaces
直接编译 也报错

[1033032934]

@378718608 The passed service type is invalid 这个问题需要先在ex_pkg目录下source install/local_setup.sh