It looks like your board JSON file has a core definition of
{
"build": {
"core": "industrialshields",
Which will in turn instruct this code to activate the “framework-arduino-avr-industrialshields” package
However, there is no such package defined in the platform.json. See
etc. So, as a next step, you would have to add your new package to that list, e.g.
"framework-arduino-avr-industrialshields": {
"type": "framework",
"optional": true,
"owner": "platformio",
"version": "XXXXX"
},
But as explained in Support for Industrial Sheilds Arduino based PLC e.g ARDBOX Relay PLC - #2 by maxgerhardt, you don’t need to do this.