Why can't I load pictures onto my iphoto anymore?

I have a mac by the way

so last week i plugged my friend's iphone to my iphoto to transfer some pictures. I forgot to eject her phone and i just removed the chord from my computer and it says her device was still attached. Now I can't load pictures from my phone to my iphoto. My iphone doesn't show up on the list of devices connected on iphoto. What should I do?

What should/can I do to connect my iphone to my iphoto so that I can load my pictures again?

Take it to the apple store, they always help me when mine is messing up.

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