SVG file with Adobe Illustrator cannot complete the operation

Hello experts,
I have created an SVG file with Adobe Illustrator and now I can’t open it. I can open any other files in Illustrator, but not this one. It doesn’t contain a lot of characters, is a small project. Can anyone help me to open this file ? How can I prevent this happening again with all of my files ?
Thank you !


The operation cannot complete because of an unknown error. [CANT]
