"No Animation Data In Buffer To Paste" Error Ive been animating a run cycle and I need to copy and mirror the same poses.

On frame 10 I copied that frame and on frame 14 I hit Shift + Ctrl + V to paste the copied frame and it gave me this error: no animation data in buffer to paste
Ive looked for a setting that could be enabled and could not find one that looked like it did anything with it
I'm using 2.90.1
I figured it out I had to have my mouse over the view screen.
I had my mouse over the dope sheet