I got this error while uploading the code and I tried using ST-link utility to erase the memory but no success. How do I troubleshoot it ?  Thanks in advance.

I am using the board STEVAL-ILL083V1 for controlling street light i.e. on/off/dimming. According to the given package it can be performed for individual board. Now I am thinking of to treat STEVAL-ILL083V1 as a node and want to take several such node...