PlayerPref not working on linux / ubundu

Hello

I'm having an issues with the playerprefs in unity: they don't save when i quit the game and i launch it again. I'm doing smth like a texte editor but for personal and specific use.

 public static void SaveTexts(){
         if (ParagraphManager.ins.base2.isOn){
             PlayerPrefs.SetString("oText", ins.PM.texts[0]);
             PlayerPrefs.SetString("tText", ParagraphManager.ins.base2IF.text);
             ins.PM.texts[1] = ins.PM.base2IF.text;
         } else {
             string[] texts = ins.ParagraphsToText();
 
             if (texts[0] != "")
                 PlayerPrefs.SetString("oText", texts[0]);
 
             if (texts[1] != "")
                 PlayerPrefs.SetString("tText", texts[1]);
             
 
             ParagraphManager.ins.texts = PPManager.ins.ParagraphsToText();
         }
 
         PlayerPrefs.SetString("tTitle", ParagraphManager.ins.tTitle.text);
         PlayerPrefs.SetString("oTitle", ParagraphManager.ins.oTitle.text);
 
         PlayerPrefs.SetFloat("timeSelected", TimeManager.ins.timeSelected);
 
         PlayerPrefs.Save();
    }

That's the function to set the playerprefs. It's called when we click on a button, and every ten sec

     public static void LoadTexts(){
 
         if (!PlayerPrefs.HasKey("tText") || !PlayerPrefs.HasKey("oText") || !PlayerPrefs.HasKey("tTitle") || !PlayerPrefs.HasKey("oTitle"))
             return;
 
         
         
         ParagraphManager.DeleteParagraphs();
         
         ins.PM.texts[0] = PlayerPrefs.GetString("oText");
         ins.PM.texts[1] = PlayerPrefs.GetString("tText");
         ins.TextToParagraphs(PlayerPrefs.GetString("oText"), PlayerPrefs.GetString("tText"));
 }

Here is the loading function, basicaly juste some GetString. Called at the start of the "game" and when we click on a button.

I'm sure these two functions are caller (i have some kind of log system) and the playerspref seemed to be working as long as I don't close the game. In the editor it works perfectly fine but when i try to build it, it doesn't work.

When i start the game using terminal (on ubuntu) i got a line saying 'Unable to load player prefs':

The playerprefs keys are: tTitle, tText, oTitle, oText, timeSelected and autoSave.

I hope someone will be able to help me out. Thx for reading.