use Time.current instead of Time.zone.now. Time.zone.now is nil without timezone starting with Rails7

lib/additionals.rb

@@ -25,7 +25,7 @@ module Additionals
 
     def now_with_user_time_zone(user = User.current)
       if user.time_zone.nil?
-        Time.zone.now
+        Time.current
       else
         user.time_zone.now
       end

lib/additionals/patches/time_entry_patch.rb

@@ -27,7 +27,7 @@ module Additionals
         def validate_issue_allowed
           return unless issue_id && issue
           # NOTE: do not use user time zone here, because issue do not use it
-          return if Setting.commit_logtime_enabled? && (issue.updated_on + 5.seconds) > Time.zone.now
+          return if Setting.commit_logtime_enabled? && (issue.updated_on + 5.seconds) > Time.current
 
           errors.add :issue_id, :issue_log_time_not_allowed unless issue.log_time_allowed?
         end