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```bash
..$ rails s
=> Booting Puma
=> Rails 5.2.6 application starting in development
=> Run `rails server -h` for more startup options
A server is already running. Check /home/istiak/ruby/qpixel/tmp/pids/server.pid.
Exiting
```
I was using my laptop. But, suddenly my laptop had turned off (for low battery). When I turned on my laptop and trying to run the server. I got above error. What should I do now? I had tried to go to gateway (http://localhost:3000/) but, I couldn't visit that site.

```bash
..$ rails s
=> Booting Puma
=> Rails 5.2.6 application starting in development
=> Run `rails server -h` for more startup options
A server is already running. Check /home/istiak/ruby/qpixel/tmp/pids/server.pid.
Exiting
```
I was using my laptop. But, suddenly my laptop had turned off (for low battery). When I turned on my laptop and trying to run the server, I got above error. What should I do now? I had tried to go to gateway (http://localhost:3000/) but I couldn't visit that site.

ruby-on-rails server