error: fatal error: class java.lang.String not found.

[xzzlhjdn]

errors when building

[albertnetymk]

Same problem on my box.

[diner-wang]

same problem

[diner-wang]

I solved the problem. The Scala version specified by the project is lower than the lowest version supported by the JDK8.
Changing "2.9.0-1" into "2.11.12" on line 50 of pom.xml will build successfully.