Unable to find jar

When I build project then get error : "Unable to find jar in the system path. This tool is required to process Play Services dependencies. Either set JAVA_HOME or add jar to the PATH variable to resolve this error". I don't understand with what it can be connected. In assets there is Android plugin for GoogleMobileAds. SDK , JDK , NDK established. On the mobile device assembly working. Same does not work XML files though I attach through Resources tuned directory and on the desktop PCs it works without errors(for android changed : "jar:file//"...). P.S. Please forgive me for bad english.