Revision 13457: 33_readingsGroup.pm: fix initialization if fhemweb hast not been used. ...
33_readingsGroup.pm: fix initialization if fhemweb hast not been used. see: ​https://forum.fhem.de/index.php/topic,14425.msg589046.html#msg589046
Source: Revision 13457: 33_readingsGroup.pm: fix initialization if fhemweb hast not been used. ... (http://svn.fhem.de/trac/changeset/13457/trunk)