svn: E205011: Failure occurred processing one or more externals definitions

[zhouwy1128@gmail_com]

I try to check out the source code by

svn co https://svn-ccsm-models.cgd.ucar.edu/cesm1/release_tags/cesm1_2_2

However, after downloading many things, it returns the following error:

Checked out external at revision 91770.

Checked out revision 91770.
svn: E205011: Failure occurred processing one or more externals definitions

I was wondering if anyone knows how to fix this.

Thank you in advance!

Wenyu