token is now an writable char thanks to the modulos !

backend/src/main/java/ovh/herisson/Clyde/Services/TokenService.java

@@ -25,11 +25,7 @@ public class TokenService {
         byte[] bytes = new byte[64];
         new SecureRandom().nextBytes(bytes);
         for (int i = 0; i < bytes.length; i++) {
-            while (bytes[i] == 0){
-                byte[] temp = new byte[1];
-                new SecureRandom().nextBytes(temp);
-                bytes[i] = temp[0];
-            }
+            bytes[i] = (byte) (((bytes[i]+256)%256  %95+ 32));
         }
         // will never end up in the catch because of the way that SecureRandom.nextBytes is implemented
         try {