#1 by Giovanni
Hi All, I keep getting this error after opening rooms in Otree. At first I am able to open rooms, but after 5 minutes the rooms close down and this error message appears. I tried uploading the zip file again and also resetting db. It fixes the issue for a couple of minutes, but then we are back in the same situation. Any help would be appreciated. Thanks Giovanni Failed to create session: (psycopg2.errors.UndefinedTable) relation "treat_assign_subsession" does not exist LINE 1: INSERT INTO treat_assign_subsession (round_number, session_i... ^ [SQL: INSERT INTO treat_assign_subsession (round_number, session_id) VALUES (%(round_number)s, %(session_id)s) RETURNING treat_assign_subsession.id] [parameters: {'round_number': 1, 'session_id': 5}] (Background on this error at: http://sqlalche.me/e/13/f405) Traceback (most recent call last): File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/engine/base.py", line 1276, in _execute_context self.dialect.do_execute( File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/engine/default.py", line 609, in do_execute cursor.execute(statement, parameters) psycopg2.errors.UndefinedTable: relation "treat_assign_subsession" does not exist LINE 1: INSERT INTO treat_assign_subsession (round_number, session_i... ^ The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/app/.heroku/python/lib/python3.9/site-packages/otree/session.py", line 447, in create_session_traceback_wrapper return create_session(**kwargs) File "/app/.heroku/python/lib/python3.9/site-packages/otree/session.py", line 347, in create_session db.commit() File "/app/.heroku/python/lib/python3.9/site-packages/otree/database.py", line 187, in commit return self._db.commit() File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/orm/session.py", line 1046, in commit self.transaction.commit() File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/orm/session.py", line 504, in commit self._prepare_impl() File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/orm/session.py", line 483, in _prepare_impl self.session.flush() File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/orm/session.py", line 2540, in flush self._flush(objects) File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/orm/session.py", line 2682, in _flush transaction.rollback(_capture_exception=True) File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/util/langhelpers.py", line 68, in __exit__ compat.raise_( File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/util/compat.py", line 182, in raise_ raise exception File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/orm/session.py", line 2642, in _flush flush_context.execute() File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/orm/unitofwork.py", line 422, in execute rec.execute(self) File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/orm/unitofwork.py", line 586, in execute persistence.save_obj( File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/orm/persistence.py", line 239, in save_obj _emit_insert_statements( File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/orm/persistence.py", line 1135, in _emit_insert_statements result = cached_connections[connection].execute( File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/engine/base.py", line 1011, in execute return meth(self, multiparams, params) File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/sql/elements.py", line 298, in _execute_on_connection return connection._execute_clauseelement(self, multiparams, params) File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/engine/base.py", line 1124, in _execute_clauseelement ret = self._execute_context( File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/engine/base.py", line 1316, in _execute_context self._handle_dbapi_exception( File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/engine/base.py", line 1510, in _handle_dbapi_exception util.raise_( File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/util/compat.py", line 182, in raise_ raise exception File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/engine/base.py", line 1276, in _execute_context self.dialect.do_execute( File "/app/.heroku/python/lib/python3.9/site-packages/sqlalchemy/engine/default.py", line 609, in do_execute cursor.execute(statement, parameters) sqlalchemy.exc.ProgrammingError: (psycopg2.errors.UndefinedTable) relation "treat_assign_subsession" does not exist LINE 1: INSERT INTO treat_assign_subsession (round_number, session_i... ^ [SQL: INSERT INTO treat_assign_subsession (round_number, session_id) VALUES (%(round_number)s, %(session_id)s) RETURNING treat_assign_subsession.id] [parameters: {'round_number': 1, 'session_id': 5}] (Background on this error at: http://sqlalche.me/e/13/f405)