Running examples in ‘metabolighteR-Ex.R’ failed
The error most likely occurred in:

> ### Name: get_studies
> ### Title: Get Studies
> ### Aliases: get_studies
> 
> ### ** Examples
> 
> get_studies()
Error in curl::curl_fetch_memory(url, handle = handle) : 
  Could not resolve host: www.ebi.ac.uk
Calls: get_studies ... request_fetch -> request_fetch.write_memory -> <Anonymous>
Execution halted

Found the following significant warnings:
  muhaz.c:1367:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  muhaz.c:1367:13: warning: a function declaration without a prototype is deprecated in all versions of C and is treated as a zero-parameter prototype in C2x, conflicting with a previous declaration [-Wdeprecated-non-prototype]
See '/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/mudens.Rcheck/00install.out' for details.
Found the following significant warnings:
  muhaz.c:1367:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
See ‘/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/mudens.Rcheck/00install.out’ for details.
Found the following significant warnings:
  muhaz.c:1367:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  muhaz.c:1367:13: warning: a function declaration without a prototype is deprecated in all versions of C and is treated as a zero-parameter prototype in C2x, conflicting with a previous declaration [-Wdeprecated-non-prototype]
See ‘/data/gannet/ripley/R/packages/tests-clang/mudens.Rcheck/00install.out’ for details.
Found the following significant warnings:
  muhaz.c:1367:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
See ‘/data/gannet/ripley/R/packages/tests-devel/mudens.Rcheck/00install.out’ for details.

installed size is 15.5Mb
  sub-directories of 1Mb or more:
    extdata   5.4Mb
    libs      9.9Mb
installed size is 13.3Mb
  sub-directories of 1Mb or more:
    extdata   5.4Mb
    libs      7.8Mb
installed size is 104.1Mb
  sub-directories of 1Mb or more:
    extdata   5.4Mb
    libs     98.5Mb
installed size is 93.9Mb
  sub-directories of 1Mb or more:
    extdata   5.4Mb
    libs     88.3Mb
installed size is 13.3Mb
  sub-directories of 1Mb or more:
    extdata   5.4Mb
    libs      7.8Mb
installed size is 104.1Mb
  sub-directories of 1Mb or more:
    extdata   5.4Mb
    libs     98.5Mb
installed size is 93.9Mb
  sub-directories of 1Mb or more:
    extdata   5.4Mb
    libs     88.3Mb
installed size is 21.4Mb
  sub-directories of 1Mb or more:
    extdata   5.4Mb
    libs     15.9Mb