Regenerate Search Index not working in custom app created through frappe_docker

[adarshkh2397]

Information about bug

When clicking on Regenerate Search Index (under general settings section of helpdesk) leads to an API error with 500 code.
I have attached a screen recording for reference. The helpdesk app has been installed according to the steps mentioned in
custom app.md in frappe_docker.
Video attachment

Version

App Versions

{
	"erpnext": "15.46.2",
	"frappe": "15.50.1",
	"helpdesk": "1.3.1",
	"hrms": "15.36.1"
}

Installation method

docker

Relevant log output / Stack trace / Full Error Message.

### Route

Form/HD Settings/HD Settings

Traceback

Traceback (most recent call last):
  File "apps/frappe/frappe/app.py", line 114, in application
    response = frappe.api.handle(request)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "apps/frappe/frappe/api/__init__.py", line 49, in handle
    data = endpoint(**arguments)
           ^^^^^^^^^^^^^^^^^^^^^
  File "apps/frappe/frappe/api/v1.py", line 36, in handle_rpc_call
    return frappe.handler.handle()
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "apps/frappe/frappe/handler.py", line 50, in handle
    data = execute_cmd(cmd)
           ^^^^^^^^^^^^^^^^
  File "apps/frappe/frappe/handler.py", line 86, in execute_cmd
    return frappe.call(method, **frappe.form_dict)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "apps/frappe/frappe/__init__.py", line 1726, in call
    return fn(*args, **newargs)
           ^^^^^^^^^^^^^^^^^^^^
  File "apps/frappe/frappe/utils/typing_validations.py", line 31, in wrapper
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/contextlib.py", line 81, in inner
    return func(*args, **kwds)
           ^^^^^^^^^^^^^^^^^^^
  File "apps/helpdesk/helpdesk/search.py", line 386, in build_index
    search.build_index()
  File "apps/helpdesk/helpdesk/search.py", line 248, in build_index
    self.create_index()
  File "apps/helpdesk/helpdesk/search.py", line 119, in create_index
    self.redis.ft(self.index_name).create_index(
  File "env/lib/python3.12/site-packages/redis/commands/search/commands.py", line 141, in create_index
    return self.execute_command(*args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "env/lib/python3.12/site-packages/redis/client.py", line 1269, in execute_command
    return conn.retry.call_with_retry(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "env/lib/python3.12/site-packages/redis/retry.py", line 46, in call_with_retry
    return do()
           ^^^^
  File "env/lib/python3.12/site-packages/redis/client.py", line 1270, in <lambda>
    lambda: self._send_command_parse_response(
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "env/lib/python3.12/site-packages/redis/client.py", line 1246, in _send_command_parse_response
    return self.parse_response(conn, command_name, **options)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "env/lib/python3.12/site-packages/redis/client.py", line 1286, in parse_response
    response = connection.read_response()
               ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "env/lib/python3.12/site-packages/redis/connection.py", line 897, in read_response
    raise response
redis.exceptions.ResponseError: unknown command `FT.CREATE`, with args beginning with: `_ee0a4a6087c4956b|helpdesk_idx`, `PREFIX`, `1`, `_ee0a4a6087c4956b|search_doc:`, `SCORE`, `1.0`, `STOPWORDS`, `45`, `a`, `is`, 

Request Data

{
	"type": "POST",
	"args": {},
	"headers": {},
	"error_handlers": {},
	"url": "/api/method/helpdesk.search.build_index",
	"request_id": null
}

Response Data

{
	"exception": "redis.exceptions.ResponseError: unknown command `FT.CREATE`, with args beginning with: `_ee0a4a6087c4956b|helpdesk_idx`, `PREFIX`, `1`, `_ee0a4a6087c4956b|search_doc:`, `SCORE`, `1.0`, `STOPWORDS`, `45`, `a`, `is`, ",
	"exc_type": "ResponseError",
	"_exc_source": "helpdesk (app)"
}

[kalungia]

am also getting the same error, not using docker

### App Versions

{
	"crm": "2.0.0-dev",
	"erpnext": "16.0.0-dev",
	"frappe": "16.0.0-dev",
	"frappe_whatsapp": "1.0.7",
	"helpdesk": "1.2.0",
	"hrms": "16.0.0-dev",
	"imbra": "0.1.1-dev",
	"link_sms": "0.0.1"
}

### Route

Form/HD Settings/HD Settings

### Traceback

Traceback (most recent call last):
  File "apps/frappe/frappe/app.py", line 117, in application
    response = frappe.api.handle(request)
  File "apps/frappe/frappe/api/__init__.py", line 49, in handle
    data = endpoint(**arguments)
  File "apps/frappe/frappe/api/v1.py", line 36, in handle_rpc_call
    return frappe.handler.handle()
  File "apps/frappe/frappe/handler.py", line 50, in handle
    data = execute_cmd(cmd)
  File "apps/frappe/frappe/handler.py", line 86, in execute_cmd
    return frappe.call(method, **frappe.form_dict)
  File "apps/frappe/frappe/__init__.py", line 1718, in call
    return fn(*args, **newargs)
  File "apps/frappe/frappe/utils/typing_validations.py", line 32, in wrapper
    return func(*args, **kwargs)
  File "/usr/lib/python3.10/contextlib.py", line 79, in inner
    return func(*args, **kwds)
  File "apps/helpdesk/helpdesk/search.py", line 386, in build_index
    search.build_index()
  File "apps/helpdesk/helpdesk/search.py", line 248, in build_index
    self.create_index()
  File "apps/helpdesk/helpdesk/search.py", line 119, in create_index
    self.redis.ft(self.index_name).create_index(
  File "env/lib/python3.10/site-packages/redis/commands/search/commands.py", line 221, in create_index
    return self.execute_command(*args)
  File "env/lib/python3.10/site-packages/redis/client.py", line 543, in execute_command
    return conn.retry.call_with_retry(
  File "env/lib/python3.10/site-packages/redis/retry.py", line 46, in call_with_retry
    return do()
  File "env/lib/python3.10/site-packages/redis/client.py", line 544, in <lambda>
    lambda: self._send_command_parse_response(
  File "env/lib/python3.10/site-packages/redis/client.py", line 520, in _send_command_parse_response
    return self.parse_response(conn, command_name, **options)
  File "env/lib/python3.10/site-packages/redis/client.py", line 560, in parse_response
    response = connection.read_response()
  File "env/lib/python3.10/site-packages/redis/connection.py", line 536, in read_response
    raise response
redis.exceptions.ResponseError: unknown command `FT.CREATE`, with args beginning with: `_8913d2df44166659|helpdesk_idx`, `PREFIX`, `1`, `_8913d2df44166659|search_doc:`, `SCORE`, `1.0`, `STOPWORDS`, `45`, `a`, `is`, 


### Request Data

{
	"type": "POST",
	"args": {},
	"headers": {},
	"error_handlers": {},
	"url": "/api/method/helpdesk.search.build_index",
	"request_id": null
}

### Response Data

{
	"exception": "redis.exceptions.ResponseError: unknown command `FT.CREATE`, with args beginning with: `_8913d2df44166659|helpdesk_idx`, `PREFIX`, `1`, `_8913d2df44166659|search_doc:`, `SCORE`, `1.0`, `STOPWORDS`, `45`, `a`, `is`, ",
	"exc_type": "ResponseError",
	"_exc_source": "helpdesk (app)"
}

[RitvikSardana]

If anyone gets"FT.CREATE" error, that means, the package is not installed, so 2 things you need to do

1. bench setup requirements
2. install redis search on your instance.