[tryton-dev] Problem on migration 3.4 to 3.6 restore fail

[Oscar Andres Alvarez Montero]

Hi devs

I don't know if it is a bug, but trying restore a database from 3.4 to 3.6
version I get this message:

ERROR:tryton.common.common:Traceback (most recent call last):
  File
"/home/psk/.virtualenvs/tryton36/local/lib/python2.7/site-packages/tryton/gui/main.py",
line 1320, in sig_db_restore
    res = rpcprogress.run(False)
  File
"/home/psk/.virtualenvs/tryton36/local/lib/python2.7/site-packages/tryton/common/common.py",
line 1292, in run
    return self.process()
  File
"/home/psk/.virtualenvs/tryton36/local/lib/python2.7/site-packages/tryton/common/common.py",
line 1319, in process
    return return_()
  File
"/home/psk/.virtualenvs/tryton36/local/lib/python2.7/site-packages/tryton/common/common.py",
line 1312, in return_
    raise self.exception
TypeError: <read-only buffer for 0x7f88f2495010, size -1, offset 0 at
0x7f890bee8a30> is not JSON serializable

Version
Server 3.6.1
Client 3.6.1


Oscar Alvarez