Update to 7.6 fail

Support Developer
1

When updating to version 7.6 I get the following error:

$ trytond-admin -c /etc/tryton/trytond.conf -d tryton --all

Traceback (most recent call last):
  File "/usr/lib/python-exec/python3.13/trytond-admin", line 33, in <module>
    admin.run(options)
    ~~~~~~~~~^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/admin.py", line 59, in run
    pool.init(update=options.update, lang=list(lang),
    ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        activatedeps=options.activatedeps,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        indexes=options.indexes)
        ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/pool.py", line 143, in init
    restart = not load_modules(
                  ~~~~~~~~~~~~^
        self.database_name, self, update=update, lang=lang,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        activatedeps=activatedeps, indexes=indexes)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/modules/__init__.py", line 425, in load_modules
    _load_modules(update)
    ~~~~~~~~~~~~~^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/modules/__init__.py", line 395, in _load_modules
    load_module_graph(graph, pool, update, lang, indexes)
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/modules/__init__.py", line 194, in load_module_graph
    register_classes(early_classes[module], module)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/modules/__init__.py", line 181, in register_classes
    cls.__register__(module)
    ~~~~~~~~~~~~~~~~^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/ir/model.py", line 343, in __register__
    super().__register__(module)
    ~~~~~~~~~~~~~~~~~~~~^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/model/fields/fmany2one.py", line 34, in __register__
    super().__register__(module)
    ~~~~~~~~~~~~~~~~~~~~^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/model/fields/fmany2one.py", line 34, in __register__
    super().__register__(module)
    ~~~~~~~~~~~~~~~~~~~~^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/model/fields/fmany2one.py", line 34, in __register__
    super().__register__(module)
    ~~~~~~~~~~~~~~~~~~~~^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/model/modelsql.py", line 452, in __register__
    super().__register__(module_name)
    ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/model/model.py", line 131, in __register__
    model_id = Model_.register(cls, module_name)
  File "/usr/lib/python3.13/site-packages/trytond/ir/model.py", line 110, in register
    cursor.execute(*ir_model.insert(
    ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
            [ir_model.name, ir_model.string, ir_model.module],
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
            [[model.__name__, model.__string__, module_name]]))
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/trytond/backend/postgresql/database.py", line 78, in execute
    cursor.execute(self, sql, args)
    ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
psycopg2.errors.UndefinedColumn: no existe la columna «string» en la relación «ir_model»
LINE 1: INSERT INTO "ir_model" ("name", "string", "module") VALUES (...

I have no idea which model I should delete or which database table.

3

Have you checked the migration guide Migration — Tryton Documentation? You have to make some changes to the database before you can upgrade.

4

Thanks, I didn’t know there wasn’t that documentation.

5

Yeah, it used to be here on the forum in a special category, but it silently got moved to the new location. Hopefully this will help others as well.

6

It was not silently, it is clearly in the announcement, the former link redirect to the new place and it was done publicly on Add manual migration to documentation (!1993) · Merge requests · Tryton / Tryton · GitLab.