I can't upload any image (id: 2500 the reason is: [SecurityErrorEvent type="securityError" bubbles=false cancelable=false eventPhase=2 text="Error #2170"])

I can’t upload images for 2 days now. Any image i put this displays: 
File type not supported
Technical details:
id: 2500 the reason is: [SecurityErrorEvent type=“securityError” bubbles=false cancelable=false eventPhase=2 text=“Error #2170”]

I have tried using different computers and it still happens. I have tried checking the image format and it is completely supported. Heck, even the images i used in previous prezi presentations displayed this error. What can I do about this? I am stuck for 2 hours already. I need fast help. Thank you.

Hello Vera,

Thank you for the fast response.

I’ve tried your choices also. It seems it still shows the same error message. Is there a possibility that this would be a server error? I’m just presuming.

Regards,
John

you can drag from file explorer to the canvas, where you went place the image