I installed Eclipse Jee 2019-03 via the Eclipse Installer on Windows 10 about a week ago. When I try to open the Eclipse Marketplace (Help -> Eclipse Marketplace...), I get the following error:
Cannot open Eclipse Marketplace
Cannot install remote marketplace locations: loading constraint violation when resolving method "org/apache/http/impl/client/HttpClientBuilder.setConnectionManager(Lorg/apache/http/conn/HttpClientConnectionManager;)Lorg/apache/http/impl/client/HttpClientBuilder;" : loader "org/eclipse/osgi/internal/loader/EquinoxClassLoader@2acb6b8e" of class "org/apache/http/client/fluent/Executor" and loader "org/eclipse/osgi/internal/loader/EquinoxClassLoader@270cc443" of class "org/apache/http/impl/client/HttpClientBuilder" have different types for the method signature
loading constraint violation when resolving method "org/apache/http/impl/client/HttpClientBuilder.setConnectionManager(Lorg/apache/http/conn/HttpClientConnectionManager;)Lorg/apache/http/impl/client/HttpClientBuilder;" : loader "org/eclipse/osgi/internal/loader/EquinoxClassLoader@2acb6b8e" of class "org/apache/http/client/fluent/Executor" and loader "org/eclipse/osgi/internal/loader/EquinoxClassLoader@270cc443" of class "org/apache/http/impl/client/HttpClientBuilder" have different types for the method signature
loading constraint violation when resolving method "org/apache/http/impl/client/HttpClientBuilder.setConnectionManager(Lorg/apache/http/conn/HttpClientConnectionManager;)Lorg/apache/http/impl/client/HttpClientBuilder;" : loader "org/eclipse/osgi/internal/loader/EquinoxClassLoader@2acb6b8e" of class "org/apache/http/client/fluent/Executor" and loader "org/eclipse/osgi/internal/loader/EquinoxClassLoader@270cc443" of class "org/apache/http/impl/client/HttpClientBuilder" have different types for the method signature
loading constraint violation when resolving method "org/apache/http/impl/client/HttpClientBuilder.setConnectionManager(Lorg/apache/http/conn/HttpClientConnectionManager;)Lorg/apache/http/impl/client/HttpClientBuilder;" : loader "org/eclipse/osgi/internal/loader/EquinoxClassLoader@2acb6b8e" of class "org/apache/http/client/fluent/Executor" and loader "org/eclipse/osgi/internal/loader/EquinoxClassLoader@270cc443" of class "org/apache/http/impl/client/HttpClientBuilder" have different types for the method signature
Is this a known problem? If so, how do I fix the problem. If not, where/how should I report the problem?
[Updated on: Fri, 21 June 2019 02:30] by Moderator
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