Cannot deploy Java Adapter on IBM MobileFirst Platform 8.0 - ibm-mobilefirst

Question

We have a java adapter that we are trying to deploy in IBM BFP 8.0. See error stack trace below:
[ERROR] logger.changeStateDeploymentException: FWLSE0321: State change failure. Caused by: java.lang.RuntimeException: User code thrown exception: java.lang.NoSuchMethodError: org/apache/http/impl/conn/CPool.setValidateAfterInactivity(I)V at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:181) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:163) at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:973) at org.apache.http.impl.client.HttpClients.createDefault(HttpClients.java:56) at com.mypackage.adapter.XYZJavaAdapterResource.init(XYZJavaAdapterResource.java:52) at com.mypackage.adapter.XYZJavaAdapterApplication.init(XYZJavaAdapterApplication.java:21) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:95) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:56) at java.lang.reflect.Method.invoke(Method.java:620) at
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.531 s
[INFO] Finished at: 2018-10-05T18:28:03+08:00
[INFO] Final Memory: 10M/204M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.ibm.mfp:adapter-maven-plugin:8.0.2018082311:deploy (default-cli) on project com.mypackage.XYZJavaAdapter: Unexpected response from http://somehost:9080/mfpadmin/management-apis/2.0/runtimes/mfp/adapters -> [Help 1]
MFP version:
Name: IBM MobileFirst Platform Server
Installation directory: /opt/IBM/MFPDEVENV/MobileFirst_Platform_Server
Translations: English (en)
Architecture: 64-bit
[Package]
Name: IBM® MobileFirst Platform Server (com.ibm.mobilefirst.foundation.server)
Version: 8.0.0.20170220_1811 (8.0.0.20170220_1811)
CLI VERSION:
MobileFirst Platform Foundation Command Line Interface (CLI): 8.0.0-2018040312
MFP console log: see below
Caused by: java.lang.RuntimeException: User code thrown exception: java.lang.NoSuchMethodError: org/apache/http/impl/conn/CPool.setValidateAfterInactivity(I)V
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:181)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:163)
at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:973)
at org.apache.http.impl.client.HttpClients.createDefault(HttpClients.java:56)
[10/26/18 8:36:24:686 HKT] 00013f2d .worklight.admin.configservice.datastore.ConfigServiceClient E Unable to delete configuration with id ADAPTER_CONTENT due to exception FWLSE3208E: An invalid status code "404" was returned. The response content is "{"reason":"configuration_not_found","details":"CNFSRVE115: configuration with id 'ADAPTER_CONTENT' for schema 'mfp_default_schema' with version '1.0' not found"}"
Can anyone help us on how to solve this issue?
Thanks in advance