<p>You may also need to install <code>pyserial</code>. See <a href="https://stackoverflow.com/a/14109679/204052">this StackOverflow question</a> for details.</p>

CC BY-SA 3.0
2013-01-04T09:26:48.067Z
After installing `pyserial`:
`user@machine:~/btc/poclbm-master$ python poclbm.py -d 0 user.worker:pass@http://api.bitcoin.cz:8332
 04/01/2013 10:25:40, Ignored invalid server entry: user.worker:pass@http://api.bitcoin.cz:8332

At least one server is required` Do you know what that means?
user2545
CC BY-SA 3.0
2013-01-04T10:13:21.453Z
Put `http://` in front of `user.worker` and it should work. The address you are using right now (`username:password@http://...`) is not a valid URL.
cdecker
CC BY-SA 3.0
2013-01-04T04:31:49.453Z
2013-01-04T04:31:49.453Z
2017-05-23T12:34:59.703Z
Colin Dean
<p>I'm running on linux, just installed PyOpenCL, but when I run poclbm I get this error:</p>

<pre><code> 03/01/2013 16:49:12, Ignored invalid server entry: username:password@host:port
Traceback (most recent call last):
  File "poclbm.py", line 84, in &lt;module&gt;
    import BFLMiner
  File "/home/myhome/btc/poclbm-master/BFLMiner.py", line 4, in &lt;module&gt;
    from ioutil import find_udev, find_serial_by_id, find_com_ports
  File "/home/myhome/btc/poclbm-master/ioutil.py", line 2, in &lt;module&gt;
    from serial.tools import list_ports
ImportError: No module named tools
</code></pre>

<p>I run it with the following command:
<code>python poclbm.py -d 0 username:password@host:port</code></p>

<p>Is there something wrong?</p>

<p>Thanks</p>

<poclbm>
Linux poclbm error
user2545
# Linux poclbm error

(Asked by: username_0 on 2013-01-03)

I'm running on linux, just installed PyOpenCL, but when I run poclbm I get this error:
 03/01/2013 16:49:12, Ignored invalid server entry: username:password@host:port
Traceback (most recent call last):
  File "poclbm.py", line 84, in 
    import BFLMiner
  File "/home/myhome/btc/poclbm-master/BFLMiner.py", line 4, in 
    from ioutil import find_udev, find_serial_by_id, find_com_ports
  File "/home/myhome/btc/poclbm-master/ioutil.py", line 2, in 
    from serial.tools import list_ports
ImportError: No module named tools

I run it with the following command:
python poclbm.py -d 0 username:password@host:port
Is there something wrong?
Thanks

**Tags:** poclbm


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## 1 answers

### Answer by username_1 on 2013-01-04. Score: 0 | Accepted answer

You may also need to install `pyserial`. See [this StackOverflow question](https://stackoverflow.com/a/14109679/204052) for details.

> **Comments:**
> **username_0**: After installing `pyserial`: `user@machine:~/btc/poclbm-master$ python poclbm.py -d 0 user.worker:pass@http://api.bitcoin.cz:8332  04/01/2013 10:25:40, Ignored invalid server entry: user.worker:pass@http://api.bitcoin.cz:8332  At least one server is required` Do you know what that means?  
> **username_2**: Put `http://` in front of `user.worker` and it should work. The address you are using right now (`username:password@http://...`) is not a valid URL.  

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