"Package has no %description:" when packaging an rpm

I am packaging a very simple rpm of a redmine plugin, for internal use, and I am stuck with a "Package has no %description:" error.

The .spec has a description and I couldn't find anything relevant on the inet. Here goes my .spec:

codeName:           redmine_knowledgebase
Version:        2.2.1
Release:        1%{?dist}
Summary:        Redmine plugin to add knowledgbase functionality
Group:          redmine-plugins
License:        MIT
URL:            https://github.com/alexbevi/redmine_knowledgebase
Source0:        redmine_knowledgebase.tar.gz
BuildRoot:      %(mktemp -ud %{tmp/%{name}-%{version}-%{release})
BuildRequires:
Requires:       redmine, ruby, rubygems

%description
Redmine plugin to add knowledgbase functionality
%prep
%setup -q -n redmine_knowledgebase

%build

%install
rm -rf %{buildroot}
install -m 0755 / /var/www/redmine/plugins/
bundle install
rake redmine:plugins:migrate NAME=redmine_knowledgebase

%clean
rm -rf %{buildroot}

%files
%defattr(-,apache,apache,-)
/var/www/redmine/plugins/*
%post
echo " "
echo "This will display after rpm installs the package!"
echo "If the plugin does not work, check the permissions ans ownership of the newly created ../redmine/plugins/redmine_knowledgebase"

rpmlint gives me the following errors:

rpmlint ../SPECS/redmine_knowledgebase.spec 
../SPECS/redmine_knowledgebase.spec:5: W: non-standard-group redmine-plugins
../SPECS/redmine_knowledgebase.spec: E: specfile-error error: Package has no %description: redmine_knowledgebase
../SPECS/redmine_knowledgebase.spec: E: specfile-error error: query of specfile ../SPECS/redmine_knowledgebase.spec failed, can't parse
0 packages and 1 specfiles checked; 2 errors, 1 warnings

Solution

Apparently "Package has no %description" pops up when an unidentified error occurs. I solved this by formatting better the .spec: -I have given a path to source0 -I have provided a BuildRequired package (anything will do, I put gcc in there) -I have fixed indentation to use only tabs