* installing *source* package 'statnetWeb' ...
Warning in .canonicalize_person_role(role) :
Invalid role specification: 'cre, aut'.
Error : Invalid DESCRIPTION file
Authors@R field gives no person with maintainer role, valid email
address and non-empty name.
See section 'The DESCRIPTION file' in the 'Writing R Extensions'
manual.
ERROR: installing package DESCRIPTION failed for package 'statnetWeb'
* removing 'F:/ROpen/R-3.5.1/library/statnetWeb'
In R CMD INSTALL
Installation failed: Command failed (1)
Installing statnetWeb gives the following error.