Error:

Uncaught TypeError: value.split is not a function

http://localhost:8099/web/content/417-9eb0f92/web.assets_backend.js:1036

Traceback:

TypeError: value.split is not a function

    at Class._getDisplayName (http://localhost:8099/web/content/417-9eb0f92/web.assets_backend.js:1036:101)

    at http://localhost:8099/web/content/417-9eb0f92/web.assets_backend.js:1041:219

    at Function._.map._.collect (http://localhost:8099/web/content/383-91f685c/web.assets_common.js:13:270)

    at Object.<anonymous> (http://localhost:8099/web/content/417-9eb0f92/web.assets_backend.js:1041:186)

    at Object.<anonymous> (http://localhost:8099/web/content/383-91f685c/web.assets_common.js:802:681)

    at fire (http://localhost:8099/web/content/383-91f685c/web.assets_common.js:796:299)

    at Object.fireWith [as resolveWith] (http://localhost:8099/web/content/383-91f685c/web.assets_common.js:801:198)

    at Object.deferred.<computed> [as resolve] (http://localhost:8099/web/content/383-91f685c/web.assets_common.js:803:56)

    at Object.<anonymous> (http://localhost:8099/web/content/383-91f685c/web.assets_common.js:3869:358)

    at Object.<anonymous> (http://localhost:8099/web/content/383-91f685c/web.assets_common.js:802:681)

CODE >>>> 

@api.multi
def name_get(self):
    res = []
    for select in self :
        if select.scs_contribut == 'commi' :
            name = select.name_commi                
        elif select.scs_contribut == 'exco':
            name = 'Exco From ' + str(select.period_start) + 'to ' + str(select.period_end)            
        else:
            name = select.name_scs            
        res.append((select.id, name))
    return res