P.S.
Previous command is in Python:
"C:\Users\admin\AppData\Local\Arduino15\packages\esp8266\tools\python3\3.7.2-post1/python3" "C:\Users\admin\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.0.1/tools/cp.py" "C:\Users\admin\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.0.1/tools/sdk/ld/eagle.flash.4m2m.ld" "C:\Users\admin\AppData\Local\Temp\arduino_build_243392/ld_h/local.eagle.flash.ld.h"
Maybe it is a python problem ?
I have python 3.7.1 and it is in PATH variable.
I can't upgrade to 3.10.0 because of my windows7.
Mariusz