In which file did you encounter the issue?

java-docs-samples/vision/cloud-client/src/main/java/com/example/vision/QuickstartSample.java

Did you change the file? If so, how?

no. running on Tomcat 7 in java 1.8

Describe the issue

EntityAnnotation annotation : res.getLabelAnnotationsList()
there are no items in that. It was working fine some time back, now stopped working. I'm using:
com.google.cloud
google-cloud-vision
0.17.1-beta