I'm working on a tracking project using the Icarus IoT Dev Board (nRF9160), which employs both NB-IoT and GPS functionalities. During the project, I encountered an issue where, after successfully initializing either the GPS or the IoT module, attempting to initialize the other module fails. The error message returned is:
`<err> lte_lc: Could not send AT command, error: -8`.
I am using toolchain version 1.5.1.
I am seeking to understand the potential reasons behind this error. Specifically, why might the initialization of one module interfere with the initialization of the other, resulting in the inability to send AT commands? What are the possible underlying causes for this error code, and how can they be resolved to ensure successful initialization of both the GPS and IoT modules on the nRF9160 board?
