contracts plugin use with time_logger plugin

[noobi97]

Hi!

I would like to use this cool plugin with time_logger. When i want add time entry with time_logger plugin i got 500 error, and this is in prodiction log:

"NoMethodError (undefined method is_fixed_price' for nil:NilClass): plugins/contracts/lib/contracts/patches/time_entry_patch.rb:29:in time_not_exceed_contract'
app/controllers/issues_controller.rb:554:in block in save_issue_with_child_records' app/controllers/issues_controller.rb:546:in save_issue_with_child_records'
app/controllers/issues_controller.rb:168:in update' lib/redmine/sudo_mode.rb:63:in sudo_mode'"

What should i do?
Thank, Norbert