Hi
If you meet this issue again, please try below step:
1.Open EasyEDA Source.
![image.png](//image.easyeda.com/pullimage/qHz1jnFZue5mWS083XZZCx320ucLZKjzRXiBQtNg.png)
2.Create New Document
![image.png](//image.easyeda.com/pullimage/RQ4PzmToC3LlAuOUOFiF6CmUdyGl16ghWsaE6MCK.png)
3.Then Save the New document to the project.
If saving successful, please close the error PCB.
and please tell us what is your operation steps for the detail. we will follow your step to repeat this issue.
Thanks
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