Stellar-connectior build failed

[seshalh]

FAILURE: Build failed with an exception.

org.fineract.module.stellar.TestCreateBridge > classMethod FAILED
com.github.dockerjava.api.DockerClientException at TestCreateBridge.java:54

org.fineract.module.stellar.TestCreateBridge > classMethod FAILED
java.lang.NullPointerException at TestCreateBridge.java:59

org.fineract.module.stellar.TestCreateTrustLine > classMethod FAILED
com.github.dockerjava.api.DockerClientException at TestCreateTrustLine.java:62

org.fineract.module.stellar.TestCreateTrustLine > classMethod FAILED
java.lang.NullPointerException at TestCreateTrustLine.java:80

org.fineract.module.stellar.TestPaymentInIncompleteNetwork > classMethod FAILED
com.github.dockerjava.api.DockerClientException at TestPaymentInIncompleteNetwork.java:79

org.fineract.module.stellar.TestPaymentInIncompleteNetwork > classMethod FAILED
java.lang.NullPointerException at TestPaymentInIncompleteNetwork.java:125

org.fineract.module.stellar.TestPaymentInSimpleNetwork > classMethod FAILED
com.github.dockerjava.api.DockerClientException at TestPaymentInSimpleNetwork.java:78

org.fineract.module.stellar.TestPaymentInSimpleNetwork > classMethod FAILED
java.lang.NullPointerException at TestPaymentInSimpleNetwork.java:119

org.fineract.module.stellar.TestVault > classMethod FAILED
com.github.dockerjava.api.DockerClientException at TestVault.java:135

org.fineract.module.stellar.TestVault > classMethod FAILED
java.lang.NullPointerException at TestVault.java:156

31 tests completed, 10 failed
:test FAILED

FAILURE: Build failed with an exception.

[seshalh]

Kindly help me on this to build successfully