Redmine

Hello, i'm using Redmine 3.3.0 and trying to get Global Stats plugin to work. For two days the plugin had been giving the 404 error but this morning it magically worked for like 5 minutes and now it's gone again. I'm asking here because the plugin owner doesnt seem to be active for at least 1 year. Here's my log :

Started GET "/" for 10.100.100.52 at 2016-09-05 14:14:16 +0000
Processing by WelcomeController#index as HTML
Current user: admin (id=1)
Rendered welcome/index.html.erb within layouts/base (5.1ms)
Rendered plugins/a_common_libs/app/views/hooks/a_common_libs/_html_head.html.erb (2.9ms)
Rendered plugins/global_roles/app/views/hooks/global_roles/_head.html.erb (0.4ms)
Rendered plugins/global_roles/app/views/hooks/global_roles/_view_layouts_base_body_bottom.html.erb (0.4ms)
Completed 200 OK in 54ms (Views: 33.2ms | ActiveRecord: 9.2ms)
Started GET "/global_stats/current_week" for 10.100.100.52 at 2016-09-05 14:14:31 +0000
Processing by StatsController#index as HTML
Parameters: {"time_filter"=>"current_week"}
Current user: admin (id=1)
Completed 404 Not Found in 22ms (ActiveRecord: 6.8ms)

ActiveRecord::RecordNotFound (Couldn't find Project with 'id'=):
app/models/project.rb:310:in `find'
plugins/redmine_stats/app/models/stat.rb:64:in `block in authors'
plugins/redmine_stats/app/models/stat.rb:63:in `each'
plugins/redmine_stats/app/models/stat.rb:63:in `authors'
plugins/redmine_stats/app/controllers/stats_controller.rb:22:in `index'
lib/redmine/sudo_mode.rb:63:in `sudo_mode'

Thanks in advance.