java - Google Spanner NullPointerException at SpannerOptions -

i'm trying initiate , add google spanner during runtime. however, when reach line:

spanneroptions options = spanneroptions.newbuilder().build(); 

i stack trace:

    2017-08-14 14:28:39.232:warn:oejs.servlethandler:qtp998351292-16: error /_ah/api/discovery/v1/apis/helloworld/v1/rest java.lang.nosuchmethoderror: com.google.common.base.preconditions.checkargument(zljava/lang/string;ii)v     @ com.google.cloud.spanner.spanneroptions.createchannels(spanneroptions.java:232)     @ com.google.cloud.spanner.spanneroptions.<init>(spanneroptions.java:88)     @ com.google.cloud.spanner.spanneroptions.<init>(spanneroptions.java:43)     @ com.google.cloud.spanner.spanneroptions$builder.build(spanneroptions.java:179)     @ com.example.b612.asteroidlist.<clinit>(asteroidlist.java)     @ java.lang.class.forname0(native method)     @ java.lang.class.forname(unknown source)     @ com.google.api.server.spi.servletinitializationparameters.getclassforname(servletinitializationparameters.java:115)     @ com.google.api.server.spi.servletinitializationparameters.fromservletconfig(servletinitializationparameters.java:72)     @ com.google.api.server.spi.endpointsservlet.init(endpointsservlet.java:56)     @ org.eclipse.jetty.servlet.servletholder.initservlet(servletholder.java:643)     @ org.eclipse.jetty.servlet.servletholder.getservlet(servletholder.java:499)     @ org.eclipse.jetty.servlet.servletholder.ensureinstance(servletholder.java:791)     @ org.eclipse.jetty.servlet.servletholder.prepare(servletholder.java:776)     @ org.eclipse.jetty.servlet.servlethandler.dohandle(servlethandler.java:579)     @ org.eclipse.jetty.server.handler.scopedhandler.handle(scopedhandler.java:143)     @ org.eclipse.jetty.security.securityhandler.handle(securityhandler.java:524)     @ org.eclipse.jetty.server.session.sessionhandler.dohandle(sessionhandler.java:226)     @ org.eclipse.jetty.server.handler.contexthandler.dohandle(contexthandler.java:1180)     @ org.eclipse.jetty.servlet.servlethandler.doscope(servlethandler.java:512)     @ org.eclipse.jetty.server.session.sessionhandler.doscope(sessionhandler.java:185)     @ org.eclipse.jetty.server.handler.contexthandler.doscope(contexthandler.java:1112)     @ com.google.appengine.tools.development.jetty9.devappenginewebappcontext.doscope(devappenginewebappcontext.java:94)     @ org.eclipse.jetty.server.handler.scopedhandler.handle(scopedhandler.java:141)     @ org.eclipse.jetty.server.handler.handlerwrapper.handle(handlerwrapper.java:134)     @ com.google.appengine.tools.development.jetty9.jettycontainerservice$apiproxyhandler.handle(jettycontainerservice.java:597)     @ org.eclipse.jetty.server.handler.handlerwrapper.handle(handlerwrapper.java:134)     @ org.eclipse.jetty.server.server.handle(server.java:534)     @ org.eclipse.jetty.server.httpchannel.handle(httpchannel.java:320)     @ org.eclipse.jetty.server.httpconnection.onfillable(httpconnection.java:251)     @ org.eclipse.jetty.io.abstractconnection$readcallback.succeeded(abstractconnection.java:283)     @ org.eclipse.jetty.io.fillinterest.fillable(fillinterest.java:108)     @ org.eclipse.jetty.io.selectchannelendpoint$2.run(selectchannelendpoint.java:93)     @ org.eclipse.jetty.util.thread.strategy.executeproduceconsume.executeproduceconsume(executeproduceconsume.java:303)     @ org.eclipse.jetty.util.thread.strategy.executeproduceconsume.produceconsume(executeproduceconsume.java:148)     @ org.eclipse.jetty.util.thread.strategy.executeproduceconsume.run(executeproduceconsume.java:136)     @ org.eclipse.jetty.util.thread.queuedthreadpool.runjob(queuedthreadpool.java:671)     @ org.eclipse.jetty.util.thread.queuedthreadpool$2.run(queuedthreadpool.java:589)     @ java.lang.thread.run(unknown source) 2017-08-14 14:28:40.735:warn:oejs.servlethandler:qtp998351292-18: /_ah/api/discovery/v1/apis/helloworld/v1/rest java.lang.nullpointerexception     @ com.google.api.server.spi.endpointsservlet.service(endpointsservlet.java:71)     @ javax.servlet.http.httpservlet.service(httpservlet.java:790)     @ org.eclipse.jetty.servlet.servletholder.handle(servletholder.java:848)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1772)     @ com.google.appengine.api.socket.dev.devsocketfilter.dofilter(devsocketfilter.java:74)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1759)     @ com.google.appengine.tools.development.responserewriterfilter.dofilter(responserewriterfilter.java:134)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1759)     @ com.google.appengine.tools.development.headerverificationfilter.dofilter(headerverificationfilter.java:34)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1759)     @ com.google.appengine.api.blobstore.dev.serveblobfilter.dofilter(serveblobfilter.java:63)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1759)     @ com.google.apphosting.utils.servlet.transactioncleanupfilter.dofilter(transactioncleanupfilter.java:48)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1759)     @ com.google.appengine.tools.development.jetty9.staticfilefilter.dofilter(staticfilefilter.java:122)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1759)     @ com.google.appengine.tools.development.devappservermodulesfilter.dodirectrequest(devappservermodulesfilter.java:366)     @ com.google.appengine.tools.development.devappservermodulesfilter.dodirectmodulerequest(devappservermodulesfilter.java:349)     @ com.google.appengine.tools.development.devappservermodulesfilter.dofilter(devappservermodulesfilter.java:116)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1751)     @ org.eclipse.jetty.servlet.servlethandler.dohandle(servlethandler.java:582)     @ org.eclipse.jetty.server.handler.scopedhandler.handle(scopedhandler.java:143)     @ org.eclipse.jetty.security.securityhandler.handle(securityhandler.java:524)     @ org.eclipse.jetty.server.session.sessionhandler.dohandle(sessionhandler.java:226)     @ org.eclipse.jetty.server.handler.contexthandler.dohandle(contexthandler.java:1180)     @ org.eclipse.jetty.servlet.servlethandler.doscope(servlethandler.java:512)     @ org.eclipse.jetty.server.session.sessionhandler.doscope(sessionhandler.java:185)     @ org.eclipse.jetty.server.handler.contexthandler.doscope(contexthandler.java:1112)     @ com.google.appengine.tools.development.jetty9.devappenginewebappcontext.doscope(devappenginewebappcontext.java:94)     @ org.eclipse.jetty.server.handler.scopedhandler.handle(scopedhandler.java:141)     @ org.eclipse.jetty.server.handler.handlerwrapper.handle(handlerwrapper.java:134)     @ com.google.appengine.tools.development.jetty9.jettycontainerservice$apiproxyhandler.handle(jettycontainerservice.java:597)     @ org.eclipse.jetty.server.handler.handlerwrapper.handle(handlerwrapper.java:134)     @ org.eclipse.jetty.server.server.handle(server.java:534)     @ org.eclipse.jetty.server.httpchannel.handle(httpchannel.java:320)     @ org.eclipse.jetty.server.httpconnection.onfillable(httpconnection.java:251)     @ org.eclipse.jetty.io.abstractconnection$readcallback.succeeded(abstractconnection.java:283)     @ org.eclipse.jetty.io.fillinterest.fillable(fillinterest.java:108)     @ org.eclipse.jetty.io.selectchannelendpoint$2.run(selectchannelendpoint.java:93)     @ org.eclipse.jetty.util.thread.strategy.executeproduceconsume.executeproduceconsume(executeproduceconsume.java:303)     @ org.eclipse.jetty.util.thread.strategy.executeproduceconsume.produceconsume(executeproduceconsume.java:148)     @ org.eclipse.jetty.util.thread.strategy.executeproduceconsume.run(executeproduceconsume.java:136)     @ org.eclipse.jetty.util.thread.queuedthreadpool.runjob(queuedthreadpool.java:671)     @ org.eclipse.jetty.util.thread.queuedthreadpool$2.run(queuedthreadpool.java:589)     @ java.lang.thread.run(unknown source) 

some things online said resolve first issue update guava, doesn't appear have worked. error in gradle/maven? can poist additional information needed such gradle , maven files. help.

i'm fool, guava, there 2 guava dependencies in pom.xml file, 1 accidentally put in , outdated.