Installing ppsspp Bug

[Crash Weezerman]

Hi I am fairly new to retropie and I was trying to install a new emulator. I downloaded retropie to a blank microsd card there was nothing on there when I wrote it to the disk. I thought that retropie already featured a PSP emulator, but when I downloaded it (from here) I noticed that there was no file for psp roms. I looked up a tutorial vid for installing emulators. I downloaded the emulator from source, and it took a long time to install. I left it over night because it took so long. This morning when I checked on it I found that it was stuck in some sort of error. I looked like it was nearly finished with a download but at the bottom of the script it says BUG recent printk recursion I have looked it up and this is apparently an error message that Linux will bring up for certain issues. I don't have much knowledge about this issue. I have a picture of my TV screen with the issue Hoping that the context can help.

I'd like to know how I can safely get out of this and back to retropie. I don't know if I can type on this screen; it doesn't look like I can. I don't want to unplug the raspberry pi while its running except as a last resort. Please help