Please help us help you and fill where relevant:
Your LimeSurvey version:Version 3.19.3
Own server or LimeSurvey hosting:
Survey theme/template:
==================
Hello
I don't understand why, when I am testing my questionnaire, a ranking question gives some problem. I selected in the parameters of the question, between 1 to 3 answers. I've sorted 3 answers among the choices, but when I try to go to the next page, it freezes, and tells me that I have to sort all the answers.
Anyone has an idea about what is wrong with this question ?
 

Hi,
obviously you set the question to "mandatory".
Unfortunately you neither provided a lss export of these relevant questions (which is always the best to show us the entire settings)  nor showed at least your settings here


Therefore I should say:
1. option: Set the question to "not mandatory". Your desired number of ranked items you get by setting "Minimum answers" and "Maximum answers"
2. option: Set the question to "mandatory" and set the "maximum columns for answers" to your desired maximum.

I should prefer option 1. In case you try to procced without ranking any item you see in option 2 the misleading hint "Rank all items" (though here  "all" refers to 3, but the participant will not know)



Now a word to your version.
Your version didn't get any updates, security fixes for nearly 4 years. It was released October 23, 2019.
Regarding GDPR it is irresponsible to use such an old version.

Joffm

Thanks Joffm
Regarding the version I use, it is the version I can access through my University, I cannot do update by myself, but I will pass your comment to the IT support.