The selection couldn't not be launched.

[MQi.1]

I used this: File --> New --> STM32 Project --> example selector in STM32CubeIDE, the project could be saw in IDE:

 

but the build icon was unable, when I clicked "run", it was prompted:

[MQi.1]

I found a solution, I tried on the other computer with Ubuntu 20.04, this I select board not example in STM32CubeIDE, although the name of example was the same, but the example selected in this way had launch file and could be run into the board, although build(the hammer) still unable.

[Cartu38 OpenDev]

Something wrong here.

You're not getting hammer because your so called project is not one. You don't have STM32CubeIDE icon decoration if GPIO_IOToggle folder.

Means Eclipse metadat are lacking here ... so no chance to get any toolchain setup or ...

Second your so calle dproject doesn't have any linker script file ... weird too ...

Here is expected example import result:

 

[MQi.1]

Yes, I haven't selected the project name, thanks.