I can't seem to figure out what I'm doing wrong. I've enclosed my board with a Copper Area, but it's not filling. The PCB outline appears to be closed and I've redrawn it and used the Set Board Outline tool to draw an outline. I don't have any DRC errors nor do I have any net errors. Copper Zone is set to visible. The Net is set to GND. I've tried modifying various properties of the copper area including clearance, pad connection, keep island, fill style, and improve fabrication, but nothing seems to have any affect. What am I doing wrong? Thanks in advance. Here's a link to the project: [https://easyeda.com/davron12/ESP-RS485-Adapter_copy](https://easyeda.com/davron12/ESP-RS485-Adapter_copy)