[Koha] coverflow 2.4.35 error

Hi! Today I tried reinstalling coverflow plugin (v. 2.4.35) and restart koha-plack but without result. In plug-in configuration I received the following message when I tried to write mapping: Error: YAML Error: Inconsistent indentation level Code: YAML_PARSE_ERR_INCONSISTENT_INDENTATION Line: 2 Document: 1 at /usr/share/perl5/YAML/Loader.pm line 804. and this of the end: Status: 302 Found Location: /cgi-bin/koha/plugins/plugins-home.pl -- З повагою Павло Бобесюк=))