Running migrations:
  Applying cms.0027_title_placeholders_data_migration...Traceback (most recent call last):
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/backends/utils.py", line 89, in _execute
    return self.cursor.execute(sql, params)
psycopg2.errors.GroupingError: column "cms_placeholder.slot" must appear in the GROUP BY clause or be used in an aggregate function
LINE 1: SELECT "cms_placeholder"."id", "cms_placeholder"."slot", "cm...
                                       ^


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

Traceback (most recent call last):
  File "/opt/JP-Website/manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/core/management/__init__.py", line 442, in execute_from_command_line
    utility.execute()
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/core/management/__init__.py", line 436, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/core/management/base.py", line 412, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/core/management/base.py", line 458, in execute
    output = self.handle(*args, **options)
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/core/management/base.py", line 106, in wrapper
    res = handle_func(*args, **kwargs)
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/core/management/commands/migrate.py", line 356, in handle
    post_migrate_state = executor.migrate(
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/migrations/executor.py", line 135, in migrate
    state = self._migrate_all_forwards(
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/migrations/executor.py", line 167, in _migrate_all_forwards
    state = self.apply_migration(
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/migrations/executor.py", line 252, in apply_migration
    state = migration.apply(state, schema_editor)
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/migrations/migration.py", line 132, in apply
    operation.database_forwards(
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/migrations/operations/special.py", line 193, in database_forwards
    self.code(from_state.apps, schema_editor)
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/cms/migrations/0027_title_placeholders_data_migration.py", line 109, in forwards
    old_placeholders.filter(plugin_count=0).delete()
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/models/query.py", line 1147, in delete
    collector.collect(del_query)
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/models/deletion.py", line 284, in collect
    new_objs = self.add(
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/models/deletion.py", line 126, in add
    if not objs:
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/models/query.py", line 412, in __bool__
    self._fetch_all()
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/models/query.py", line 1881, in _fetch_all
    self._result_cache = list(self._iterable_class(self))
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/models/query.py", line 91, in __iter__
    results = compiler.execute_sql(
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/models/sql/compiler.py", line 1560, in execute_sql
    cursor.execute(sql, params)
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/backends/utils.py", line 102, in execute
    return super().execute(sql, params)
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/backends/utils.py", line 67, in execute
    return self._execute_with_wrappers(
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/backends/utils.py", line 80, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/backends/utils.py", line 84, in _execute
    with self.db.wrap_database_errors:
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/utils.py", line 91, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "/opt/JP-Website/myenv/lib/python3.10/site-packages/django/db/backends/utils.py", line 89, in _execute
    return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: column "cms_placeholder.slot" must appear in the GROUP BY clause or be used in an aggregate function
LINE 1: SELECT "cms_placeholder"."id", "cms_placeholder"."slot", "cm...