I am trying to do a project that I downloaded from Github for Smartthings and I cannot even verify the sketch due to a library failure. I followed instructions and even tried a few other things to no avail. What concerns me is in the error the path shows a / rather than a \ proceeding the file name. I think this is my issue but I cannot confirm and am unsure where I could even find/fix this. Any help is appreciated. Other example sketches work fine from this viewpoint.
In file included from C:\Users\Samsiam\Documents\Arduino\Sketches\ST_Anything_WindowShade_ESP8266WiFi\ST_Anything_WindowShade_ESP8266WiFi.ino:1:0:
C:\Users\Samsiam\Documents\Arduino\Sketches\libraries\SmartThingsESP8266WiFi**/**SmartThingsESP8266WiFi.h:24:10: fatal error: ESP8266WiFi.h: No such file or directory
exit status 1
Error compiling for board Arduino Nano Every.