When you run
Could not find tools.jar.
As, Build fell.
Find and get tool.jar.
It seems that tools.jar is in the JDK, so drop it.
From "Windows 10 i586 Java Development Kit"
※ Caution It seems that tools.jar is not included from JDK9 https://jpn.nec.com/webotx/download/info/from_JDK8_to_JDK11.pdf
C:\Program Files (x86)\Java\jre1.8.0_251\lib
Move tools.jar inside.