For sending a complaint or reporting a chat or user using `pyrogram`, you can follow these steps:
1. Import the necessary modules:
```python
from pyrogram import Client
from pyrogram.raw import functions
```
2. Initialize a `Client` object:
```python
app = Client("my_account")
```
3. Authenticate and log in to your account:
```python
app.start()
```
4. To report a chat:
```python
app.send(
functions.messages.ReportSpam(peer=chat_id, id=[message_id])
)
```
Here, `chat_id` is the ID of the chat or channel you want to report, and `message_id` is the ID of the specific message you want to report.
5. To report a user:
```python
app.send(
functions.account.ReportPeer(peer=user_id, reason='Reason for report')
)
```
Here, `user_id` is the ID of the user you want to report, and `reason` is the reason for the report.
6. Logout and stop the client:
```python
app.stop()
```
Now, regarding the error "Client object has no attribute 'send'", it is because the `send` method is not available directly on the `Client` object. Instead, you need to use the `send` method of the `app` object you created. Make sure you are calling `send` on the correct object.
If you are still facing the issue, please check if you have imported and initialized the `Client` object correctly.