# WLED Error connecting SerialPort

# <bdi class="markdown-title HeaderViewer-module__issueTitle--JbH7o" data-testid="issue-title">failed to execute 'open' on 'serialport': failed to open serial port.</bdi>

```
sudo setfacl -m u:eix:rw /dev/ttyUSB0

```

[https://github.com/esphome/issues/issues/4525#issuecomment-2676978792](https://github.com/esphome/issues/issues/4525#issuecomment-2676978792)