Exec format error

Hello all,

I get an error when starting a web app on the pi - “Exec format error” What is this and how to correct?? Since I cannot compile on my windows machine, am compiling on Linux Mint 2017R3. Have had no luck with any of the 2018 versions…

Any ideas would be appreciated…
Tim

Sorry - my mistake - compiled for Linux x86 app and not ARM.