Google API Error

[kdotzenrod517]

We’re receiving an exception in one of our services, and we are wondering if this is an authentication issue or a dependency error. Pasting the error below:

Unable to provision, see the following errors: 1) null returned by binding at com.google.api.ads.common.lib.factory.FactoryModule$AdsServiceClientFactoryInterface.create() but parameter 2 of com.google.api.ads.dfp.lib.client.DfpServiceClient.() is not @Nullable while locating com.google.api.ads.dfp.lib.client.DfpSession annotated with @com.google.inject.assistedinject.Assisted(value=adsSession) for parameter 2 at com.google.api.ads.dfp.lib.client.DfpServiceClient.(DfpServiceClient.java:56) while locating com.google.api.ads.dfp.lib.client.DfpServiceClient annotated with @com.google.inject.internal.UniqueAnnotations$Internal(value=1) 1 error

Any insight into this error would be greatly appreciated.

[nwbirnie]

Hey, it is likely that you have both the DFP and Ad Manager dependencies coexisting in your project. Please check your project for conflicting versions of the com.google.api-ads modules, these should all be on the same version.

[kdotzenrod517]

hey! this is the dependency tree of the only instance of com.google.api-ads in the project. It looks like they are all on the same version:

| --- com.google.api-ads:ads-lib-axis:3.16.0 | +--- com.google.api-ads:ads-lib:3.16.0 () | +--- commons-discovery:commons-discovery:0.4 | | --- commons-logging:commons-logging:1.0.4 -> 1.2 | +--- com.google.http-client:google-http-client:1.23.0 () | +--- javax.xml:jaxrpc-api:1.1 | +--- org.apache.axis:axis:1.4 | --- wsdl4j:wsdl4j:1.6.2 -> 1.6.3

[nwbirnie]

The dependency on ads-lib-axis is wrong. If you're using AdWords API you should change this to adwords-axis and similarly, for DFP to dfp-axis.

[kdotzenrod517]

Something like this?

compile('com.google.api-ads:dfp-axis:3.16.0')

[nwbirnie]

Yes, and looking at the dependency tree you will have to add com.google.api-ads:ads-lib:3.16.0 again, since this was being included transitively.

[kdotzenrod517]

we are still experiencing this error, our Google dependencies are:

compile('com.google.api-ads:ads-lib:3.16.0') compile('com.google.api-ads:dfp-axis:3.16.0'){ exclude group: "com.google.guava", module:"guava" exclude group: "com.google.guava", module:"guava-jdk5" } compile ("com.google.cloud:google-cloud:0.26.0-alpha") { exclude group: "javax.servlet", module: "servlet-api" exclude group: "com.google.guava", module:"guava" } compile("com.google.code.gson:gson:2.8.2"){ exclude group: "com.google.guava", module:"guava" } compile("com.google.apis:google-api-services-sheets:v4-rev469-1.22.0"){ exclude group: "com.google.guava", module:"guava" exclude group: "com.google.guava", module:"guava-jdk5" }

Would any of these dependencies be conflicting?

[kdotzenrod517]

Any insight into this would be much appreciated, we are still receiving the error below and believe it has something to do with our dependencies:

Unable to provision, see the following errors: 1) null returned by binding at com.google.api.ads.common.lib.factory.FactoryModule$AdsServiceClientFactoryInterface.create() but parameter 2 of com.google.api.ads.dfp.lib.client.DfpServiceClient.() is not @Nullable while locating com.google.api.ads.dfp.lib.client.DfpSession annotated with @com.google.inject.assistedinject.Assisted(value=adsSession) for parameter 2 at com.google.api.ads.dfp.lib.client.DfpServiceClient.(DfpServiceClient.java:56) while locating com.google.api.ads.dfp.lib.client.DfpServiceClient annotated with @com.google.inject.internal.UniqueAnnotations$Internal(value=1) 1 error

[jradcliff]

Hi,

A few follow-up questions that will help with our investigation:

1. Do you encounter this error for every service, or only for a specific use case? If the latter, please let us know the use case that is not working as well as one that is.
2. Is there more of your stack trace that you could share, or a snippet of your code that's triggering this exception?

Thanks, Josh

[kdotzenrod517]

We were able to resolve the issue.

Thank you for your help!