Error On running bench migrate. frappe.exceptions.UniqueValidationError

I use frappe with custom apps, without ERP next.
i updated my custom app and ran bench migrate but it resulted in the below error.
Seems like deleting an entry in postgres would fix the problem but too anxious to mess up my production server.

Don’t understand how this happened, had updated my custom app more than 10 times over last 6 months but never had such error.

frappe@6d57b7046983:~/frappe-bench$ bench migrate
Migrating xxxxxxx
Updating DocTypes for frappe        : [========================================] 100%
Updating DocTypes for weaving       : [========================================] 100%
Updating DocTypes for design_vault  : [========================================] 100%
Updating DocTypes for yarn_stock_tracker: [========================================] 100%
Queued rebuilding of search index for xxxxx

Traceback (most recent call last):
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/base_document.py", line 632, in db_update
    frappe.db.sql(
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database/database.py", line 230, in sql
    self._cursor.execute(query, values)
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/pymysql/cursors.py", line 153, in execute
    result = self._query(query)
             ^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/pymysql/cursors.py", line 322, in _query
    conn.query(q)
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/pymysql/connections.py", line 563, in query
    self._affected_rows = self._read_query_result(unbuffered=unbuffered)
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/pymysql/connections.py", line 825, in _read_query_result
    result.read()
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/pymysql/connections.py", line 1199, in read
    first_packet = self.connection._read_packet()
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/pymysql/connections.py", line 775, in _read_packet
    packet.raise_for_error()
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/pymysql/protocol.py", line 219, in raise_for_error
    err.raise_mysql_exception(self._data)
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/pymysql/err.py", line 150, in raise_mysql_exception
    raise errorclass(errno, errval)
pymysql.err.IntegrityError: (1062, "Duplicate entry 'Cron-0/15 * * * *-frappe.automation.doctype.reminder.reminder...' for key 'unique_scheduled_job'")

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 114, in <module>
    main()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 20, in main
    click.Group(commands=commands)(prog_name="bench")
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/click/core.py", line 1161, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/click/core.py", line 1082, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/click/core.py", line 1697, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/click/core.py", line 1697, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/click/core.py", line 1443, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/click/core.py", line 788, in invoke
    return __callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/env/lib/python3.11/site-packages/click/decorators.py", line 33, in new_func
    return f(get_current_context(), *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/__init__.py", line 29, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/site.py", line 684, in migrate
    ).run(site=site)
      ^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/apps/frappe/frappe/migrate.py", line 187, in run
    self.post_schema_updates()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/migrate.py", line 52, in wrapper
    raise e
  File "/home/frappe/frappe-bench/apps/frappe/frappe/migrate.py", line 44, in wrapper
    ret = method(*args, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/apps/frappe/frappe/migrate.py", line 139, in post_schema_updates
    sync_jobs()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/core/doctype/scheduled_job_type/scheduled_job_type.py", line 203, in sync_jobs
    all_events = insert_events(scheduler_events)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/apps/frappe/frappe/core/doctype/scheduled_job_type/scheduled_job_type.py", line 212, in insert_events
    cron_jobs += insert_cron_jobs(events)
                 ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/apps/frappe/frappe/core/doctype/scheduled_job_type/scheduled_job_type.py", line 224, in insert_cron_jobs
    insert_single_event("Cron", event, cron_format)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/core/doctype/scheduled_job_type/scheduled_job_type.py", line 254, in insert_single_event
    doc.save()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 378, in save
    return self._save(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 428, in _save
    self.db_update()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/base_document.py", line 641, in db_update
    self.show_unique_validation_message(e)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/base_document.py", line 669, in show_unique_validation_message
    raise frappe.UniqueValidationError(self.doctype, self.name, e)
frappe.exceptions.UniqueValidationError: ('Scheduled Job Type', '6arac5u8ts', IntegrityError(1062, "Duplicate entry 'Cron-0/15 * * * *-frappe.automation.doctype.reminder.reminder...' for key 'unique_scheduled_job'"))

Deleted the entry,
Works fine. no Issues,