Clustering by Coupling - authors

[kadirkatirci]

Hi,

i have dataset that combined wos and scopus.

bibliometrix package is 4.1.3

everything works but Clustering by Coupling

in Clustering by Coupling, if unit is document it works but for author i got this error:
error in evaluating the argument 'x' in selecting a method for function 'which': invalid regular expression, reason 'Missing ')''

i shared ss and data file.

[temiz_sr_au_af_cr.xlsx](https://github.com/massimoaria/bibliometrix/files/11867954/temiz_sr_au_af_cr.xlsx)

[kadirkatirci]

i see you have a plan for new version. do you have date for new version