When using external flash, calling Device_is_read returns a failure

[john.liu]

Hi:

 I use ncs v2.8.0, using external flash(w25q128).

this is test flash project.

hello_world_flash.zip

And this log:

Device_is_read returns a failure. But flash read/write successful.

[Hakon]

Hello,

what board are you building for? I tried building for the DK, but I got errors.