安装emmet的时候报错

An error occurred while collecting items to be installed
session context was:(profile=DefaultProfile, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
Problems downloading artifact: org.eclipse.update.feature,org.eclipse.jgit,4.6.1.201703071140-r.
MD5 hash is not as expected. Expected: 8804f1dfb348dac7a2199ba0fc596007 and found 8bcd9561846c31ad3ac0dcb9b779aaa8.