Beginner Gardening: Help! How do I get rid of this? Is it powdery mildew?, 1 by brooke71

brooke71 wrote:
Can you please help me? I am dripping to these green beans and not sure why it looks like PM is growing. I hope I am wrong. Is there anything I can do? I had an aphid attack 8 weeks ago and ripped out everything and started over...I hope I will get some beans because they are just now producing. I can wipe off this stuff as you can hopefully see in the pictures but not sure what I should be doing.
Thanks in advance for your help!