When Field name have accent this broke repport

Hello,

When The fieldname have an accent in module, that broke the repoort with :

Uncaught SyntaxError: Unexpected end of JSON input at JSON.parse () at c.arrangeSelectChoicesInOrder (Edit2.js?v=7.1.0:198) at c.registerEvents (Edit2.js?v=7.1.0:305) at c.registerEvents (jquery.class.min.js:4) at Object. (Edit.js?v=7.1.0:124) at Object. (jquery.min.js?v=7.1.0:2) at j (jquery.min.js?v=7.1.0:2) at Object.fireWith [as resolveWith] (jquery.min.js?v=7.1.0:2) at Object.e.(/vtiger61/anonymous function) [as resolve] (https://compte.brain-networks.net/vtiger61/layouts/v7/lib/jquery/jquery.min.js?v=7.1.0:2:28929) at Object. (Edit1.js?v=7.1.0:187)

We must to sanitise fieldname before the ZEND Encode