I installed OpenProject according to https://www.openproject.org/projects/openproject/wiki/Support. But I get stuck at step 9, where i had to call
“bundle exec rake db:create:all”. I assume that the call creates the database tables for the OpenProject-Instance???

I got this error message:
/usr/lib/ruby/vendor_ruby/bundler/rubygems_ext.rb:8:in `require’: no such file to load — rubygems (LoadError)
from /usr/lib/ruby/vendor_ruby/bundler/rubygems_ext.rb:8
from /usr/lib/ruby/vendor_ruby/bundler.rb:11:in `require’
from /usr/lib/ruby/vendor_ruby/bundler.rb:11
from /usr/bin/bundle:4:in `require’
from /usr/bin/bundle:4

I googled around, but I can’t identify the problem or whats the problem in detail, so I can change the configuration in the right way.

Good Day Friend, all previous steps ran without any problems?

Yes, all steps ran without any problems, but I’m not sure, because the steps are sometimes described very unclear and linux doesn’t give any response on successfull executions.

What does the error message mean in detail?