ADDITIONAL SYSTEM INFORMATION :
centos 7.6/ java version "1.8.0_152"
Java(TM) SE Runtime Environment (build 1.8.0_152-b16)
Java HotSpot(TM) 64-Bit Server VM (build 25.152-b16, mixed mode)

A DESCRIPTION OF THE PROBLEM :
the following error appears occasionally


exception:javax.net.ssl.SSLException: java.lang.ClassCastException
at sun.security.ssl.Alerts.getSSLException(Alerts.java:208)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1959)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1916)
at sun.security.ssl.SSLSocketImpl.handleException(SSLSocketImpl.java:1899)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1420)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1397)
at okhttp3.internal.connection.RealConnection.connectTls(RealConnection.java:336)
at okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:300)
at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:185)
at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.java:224)
at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.java:107)
at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.java:87)
at okhttp3.internal.connection.Transmitter.newExchange(Transmitter.java:169)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:41)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:94)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:88)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:221)
at okhttp3.RealCall.execute$original$0QguwqRM(RealCall.java:81)
at okhttp3.RealCall.execute$original$0QguwqRM$accessor$mKpetzmv(RealCall.java)
at okhttp3.RealCall$auxiliary$4R77MkCC.call(Unknown Source)

at okhttp3.RealCall.execute(RealCall.java)
at sun.reflect.GeneratedMethodAccessor271.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Suppressed: javax.net.ssl.SSLException: java.lang.ClassCastException

Caused by: java.lang.ClassCastException

FREQUENCY : rarely