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Jan 16, 2019 at 12:23 AM

Unexpected error loading extension in Eclipse

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Hello,
when I try to open my database in eclipse I receive following error massage. I would really appreciate a hint of solution:

Unexpected error loading extension: org.eclipse.equinox.p2.metadata.repository.XZedRepository

java.lang.NoClassDefFoundError: org/apache/commons/logging/impl/SLF4JLogFactory at org.apache.http.impl.client.CloseableHttpClient.<init>(CloseableHttpClient.java:59) at org.apache.http.impl.client.AbstractHttpClient.<init>(AbstractHttpClient.java:232) at org.apache.http.impl.client.DefaultHttpClient.<init>(DefaultHttpClient.java:148) at org.eclipse.ecf.provider.filetransfer.httpclient4.SNIAwareHttpClient.<init>(SNIAwareHttpClient.java:36) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientBrowseFileTransferFactory$1.sendBrowseRequest(HttpClientBrowseFileTransferFactory.java:52) at org.eclipse.ecf.provider.filetransfer.browse.MultiProtocolFileSystemBrowserAdapter.sendBrowseRequest(MultiProtocolFileSystemBrowserAdapter.java:95) at org.eclipse.equinox.internal.p2.transport.ecf.FileInfoReader.sendBrowseRequest(FileInfoReader.java:185) at org.eclipse.equinox.internal.p2.transport.ecf.FileInfoReader.getRemoteFiles(FileInfoReader.java:111) at org.eclipse.equinox.internal.p2.transport.ecf.FileInfoReader.getRemoteFile(FileInfoReader.java:127) at org.eclipse.equinox.internal.p2.transport.ecf.FileInfoReader.getLastModified(FileInfoReader.java:132) at org.eclipse.equinox.internal.p2.transport.ecf.RepositoryTransport.getLastModified(RepositoryTransport.java:229) at org.eclipse.oomph.p2.internal.core.CachingTransport.delegateGetLastModified(CachingTransport.java:396) at org.eclipse.oomph.p2.internal.core.CachingTransport.getLastModified(CachingTransport.java:345) at org.eclipse.equinox.internal.p2.repository.CacheManager.createCacheFromFile(CacheManager.java:104) at org.eclipse.equinox.internal.p2.metadata.repository.XZedSimpleMetadataRepositoryFactory.getLocalFile(XZedSimpleMetadataRepositoryFactory.java:56) at org.eclipse.equinox.internal.p2.metadata.repository.XZedSimpleMetadataRepositoryFactory.load(XZedSimpleMetadataRepositoryFactory.java:78) at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57) at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:768) at sun.reflect.GeneratedMethodAccessor40.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.oomph.util.ReflectUtil.invokeMethod(ReflectUtil.java:117) at org.eclipse.oomph.p2.internal.core.CachingRepositoryManager.loadRepository(CachingRepositoryManager.java:409) at org.eclipse.oomph.p2.internal.core.CachingRepositoryManager.loadRepository(CachingRepositoryManager.java:201) at org.eclipse.oomph.p2.internal.core.CachingRepositoryManager$Metadata.loadRepository(CachingRepositoryManager.java:476) at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96) at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92) at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.doLoad(LoadMetadataRepositoryJob.java:117) at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.runModal(LoadMetadataRepositoryJob.java:102) at org.eclipse.equinox.internal.p2.ui.sdk.PreloadingRepositoryHandler$2.runModal(PreloadingRepositoryHandler.java:83) at org.eclipse.equinox.p2.operations.ProvisioningJob.run(ProvisioningJob.java:177) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.impl.SLF4JLogFactory cannot be found by org.slf4j.apis.jcl_1.7.10.v20160208-0839 at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:410) at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:372) at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:364) at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:161) at java.lang.ClassLoader.loadClass(Unknown Source) ... 32 more

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