./venv/bin/python3.6 manage.py db upgrade errors

gistfile1.txt

(venv) bg@bg-VirtualBox:~/tasking-manager$ ./venv/bin/python3.6 manage.py db upgrade
/home/bg/tasking-manager/venv/lib/python3.6/site-packages/flask_sqlalchemy/__init__.py:839: FSADeprecationWarning: SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future.  Set it to True or False to suppress this warning.
  'SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and '
INFO  [alembic.runtime.migration] Context impl PostgresqlImpl.
INFO  [alembic.runtime.migration] Will assume transactional DDL.
INFO  [alembic.runtime.migration] Running upgrade  -> 8aa8f8d6a0c3, empty message
INFO  [alembic.runtime.migration] Running upgrade 8aa8f8d6a0c3 -> a7c617755721, empty message
INFO  [alembic.runtime.migration] Running upgrade a7c617755721 -> 48c3aed123cf, empty message
INFO  [alembic.runtime.migration] Running upgrade 48c3aed123cf -> 0aaac86a48dc, empty message
INFO  [alembic.runtime.migration] Running upgrade 0aaac86a48dc -> c4670f3bb828, empty message
INFO  [alembic.runtime.migration] Running upgrade c4670f3bb828 -> b5b8370f9262, empty message
INFO  [alembic.runtime.migration] Running upgrade b5b8370f9262 -> 9f5b73af01db, empty message
Traceback (most recent call last):
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1182, in _execute_context
    context)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 470, in do_execute
    cursor.execute(statement, parameters)
psycopg2.ProgrammingError: column "tsv" of relation "project_info" does not exist


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "manage.py", line 27, in <module>
    manager.run()
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/flask_script/__init__.py", line 412, in run
    result = self.handle(sys.argv[0], sys.argv[1:])
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/flask_script/__init__.py", line 383, in handle
    res = handle(*args, **config)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/flask_script/commands.py", line 216, in __call__
    return self.run(*args, **kwargs)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/flask_migrate/__init__.py", line 244, in upgrade
    command.upgrade(config, revision, sql=sql, tag=tag)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/alembic/command.py", line 174, in upgrade
    script.run_env()
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/alembic/script/base.py", line 416, in run_env
    util.load_python_file(self.dir, 'env.py')
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/alembic/util/pyfiles.py", line 93, in load_python_file
    module = load_module_py(module_id, path)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/alembic/util/compat.py", line 68, in load_module_py
    module_id, path).load_module(module_id)
  File "<frozen importlib._bootstrap_external>", line 399, in _check_name_wrapper
  File "<frozen importlib._bootstrap_external>", line 823, in load_module
  File "<frozen importlib._bootstrap_external>", line 682, in load_module
  File "<frozen importlib._bootstrap>", line 251, in _load_module_shim
  File "<frozen importlib._bootstrap>", line 675, in _load
  File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed
  File "migrations/env.py", line 99, in <module>
    run_migrations_online()
  File "migrations/env.py", line 92, in run_migrations_online
    context.run_migrations()
  File "<string>", line 8, in run_migrations
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/alembic/runtime/environment.py", line 807, in run_migrations
    self.get_context().run_migrations(**kw)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/alembic/runtime/migration.py", line 321, in run_migrations
    step.migration_fn(**kw)
  File "/home/bg/tasking-manager/migrations/versions/9f5b73af01db_.py", line 24, in upgrade
    op.drop_column('project_info', 'tsv')
  File "<string>", line 8, in drop_column
  File "<string>", line 3, in drop_column
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/alembic/operations/ops.py", line 1643, in drop_column
    return operations.invoke(op)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/alembic/operations/base.py", line 318, in invoke
    return fn(self, operation)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/alembic/operations/toimpl.py", line 81, in drop_column
    **operation.kw
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/alembic/ddl/impl.py", line 175, in drop_column
    self._exec(base.DropColumn(table_name, column, schema=schema))
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/alembic/ddl/impl.py", line 118, in _exec
    return conn.execute(construct, *multiparams, **params)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 945, in execute
    return meth(self, multiparams, params)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/sql/ddl.py", line 68, in _execute_on_connection
    return connection._execute_ddl(self, multiparams, params)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1002, in _execute_ddl
    compiled
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1189, in _execute_context
    context)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1402, in _handle_dbapi_exception
    exc_info
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 203, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb, cause=cause)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 186, in reraise
    raise value.with_traceback(tb)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1182, in _execute_context
    context)
  File "/home/bg/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 470, in do_execute
    cursor.execute(statement, parameters)
sqlalchemy.exc.ProgrammingError: (psycopg2.ProgrammingError) column "tsv" of relation "project_info" does not exist
 [SQL: 'ALTER TABLE project_info DROP COLUMN tsv']