When you are connected to a VM via the console interface, copying and pasting is not supported in the usual way. The following options are workarounds that send plain text from your local computer clipboard to the VM:
You can use either option to send even large amounts of text, although it may take some time to send all the text.
When you use either of these features, the text content of your local computer's clipboard is sent to the VM as a series of keystrokes. The effect can be different to pasting in some cases, since:
Each keystroke that is sent enters the application that is currently open at the time of sending. So if you switch applications mid-send, the keystrokes sent after the switch will enter the application you switched to.
A sent keystroke performs any function that may be defined in the application for the specific key.