I've noticed that the online Gerber Viewer of jlcpcb sometimes leaves stuff out.
Notice the missing triangle from the silk screen here:
![image.png](//image.easyeda.com/pullimage/e56aGykSMf0UQtrvgQ93eAlz6gGPDMHGseS5BpjD.png)
It is actually present in the gerber file, because the quick preview in the list, shows the triangle of the diode present:
![image.png](//image.easyeda.com/pullimage/s11HUn59HeSWPyvVmTAJPJLO5GRnhOlFCd6Dh4At.png)