Can't publish the problem

[ម៉ាទីនស៊ីឡាត]

While trying to publishing the Problem the system keeps saying: “Please fill out all mandatory fields!” but I can’t find any empty fields. All fields are filled (even not mandatory ones). In order to avoid this situation maybe unanswered fields can be pointed out with a red frame or background.

[អ្នកនិពន្ធ]

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