Error on migration

I get the following error when running migrations for my app:

Traceback (most recent call last):
  File "/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 104, in <module>
    main()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 19, in main
    click.Group(commands=commands)(prog_name='bench')
  File "/home/frappe/frappe-bench/env/lib/python3.8/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.8/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/home/frappe/frappe-bench/env/lib/python3.8/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.8/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/frappe/frappe-bench/env/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.8/site-packages/click/decorators.py", line 21, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/__init__.py", line 27, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/site.py", line 306, in migrate
    migrate(
  File "/home/frappe/frappe-bench/apps/frappe/frappe/migrate.py", line 75, in migrate
    sync_fixtures()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/fixtures.py", line 24, in sync_fixtures
    import_doc(frappe.get_app_path(app, "fixtures", fname))
  File "/home/frappe/frappe-bench/apps/frappe/frappe/core/doctype/data_import/data_import.py", line 186, in import_doc
    import_file_by_path(
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/import_file.py", line 155, in import_file_by_path
    update_modified(new_modified_timestamp, doc)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/import_file.py", line 184, in update_modified
    frappe.qb.update(
  File "/home/frappe/frappe-bench/env/lib/python3.8/site-packages/pypika/utils.py", line 50, in _copy
    result = func(self_copy, *args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.8/site-packages/pypika/queries.py", line 928, in where
    if not self._validate_table(criterion):
  File "/home/frappe/frappe-bench/env/lib/python3.8/site-packages/pypika/queries.py", line 1153, in _validate_table
    for field in term.fields_():
AttributeError: 'bool' object has no attribute 'fields_'

What could be the issue?