# Bad gateway and Alembic error after Rasa X update

**URL:** <https://forum.rasa.com/t/bad-gateway-and-alembic-error-after-rasa-x-update/29529>\
**Category:** \[Deprecated\] Rasa X Community Edition\
**Created:** [May 30, 2020, 10:40am UTC](https://forum.rasa.com/t/bad-gateway-and-alembic-error-after-rasa-x-update/29529 "2020-05-30T10:40:43Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![visvamba](https://avatars.discourse-cdn.com/v4/letter/v/9dc877/32.png) [@visvamba](https://forum.rasa.com/u/visvamba)\
**Post date:** [May 30, 2020, 10:40am UTC](https://forum.rasa.com/t/bad-gateway-and-alembic-error-after-rasa-x-update/29529/1 "2020-05-30T10:40:43Z")

</div>

Updated to Rasa X 0.28.5 because of model incompatibility.

```auto
RASA_X_VERSION=0.28.5
RASA_VERSION=1.10.0
RASA_X_DEMO_VERSION=0.28.1

```

Just before this I had set RASA\_X\_VERSION=latest.

Now I get this error in rasa-x Docker-Compose logs:

```auto
 INFO:alembic.runtime.migration:Context impl PostgresqlImpl.
rasa-x_1 | INFO:alembic.runtime.migration:Will assume transactional DDL.
rasa-x_1 | Traceback (most recent call last):
rasa-x_1 | File "/usr/local/lib/python3.7/site-packages/alembic/script/base.py", line 162, in _catch_revision_errors
rasa-x_1 | yield
rasa-x_1 | File "/usr/local/lib/python3.7/site-packages/alembic/script/base.py", line 364, in _upgrade_revs
rasa-x_1 | revs = list(revs)
rasa-x_1 | File "/usr/local/lib/python3.7/site-packages/alembic/script/revision.py", line 765, in _iterate_revisions
rasa-x_1 | requested_lowers = self.get_revisions(lower)
rasa-x_1 | File "/usr/local/lib/python3.7/site-packages/alembic/script/revision.py", line 319, in get_revisions
rasa-x_1 | return sum([self.get_revisions(id_elem) for id_elem in id_], ())
rasa-x_1 | File "/usr/local/lib/python3.7/site-packages/alembic/script/revision.py", line 319, in <listcomp>
rasa-x_1 | return sum([self.get_revisions(id_elem) for id_elem in id_], ())
rasa-x_1 | File "/usr/local/lib/python3.7/site-packages/alembic/script/revision.py", line 324, in get_revisions
rasa-x_1 | for rev_id in resolved_id
rasa-x_1 | File "/usr/local/lib/python3.7/site-packages/alembic/script/revision.py", line 324, in <genexpr>
rasa-x_1 | for rev_id in resolved_id
rasa-x_1 | File "/usr/local/lib/python3.7/site-packages/alembic/script/revision.py", line 397, in _revision_for_ident
rasa-x_1 | resolved_id,
rasa-x_1 | alembic.script.revision.ResolutionError: No such revision or branch 'af3596f6982f'

```

And a 502 error when I access the Rasa X front-end.