What is the problem with the no i2c device found? I hope you can answer, thank you
How did you determine the I2C device could not be found. From your pictures, they are colorful but useless. Post an annotated schematic showing exactly how this was wired. Be sure to show all components, connections, power, ground and note any leads over 25CM/10" in length.
I moved your topic to an appropriate forum category @yuiii25.
In the future, please take some time to pick the forum category that best suits the subject of your topic. There is an "About the _____ category" topic at the top of each category that explains its purpose.
This is an important part of responsible forum usage, as explained in the "How to get the best out of this forum" guide. The guide contains a lot of other useful information. Please read it.
Thanks in advance for your cooperation.
Replace jumper cables.
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And yes, I know ...
Connections look correct.
Code looks correct (although indentation had been lost, which is odd).
Faulty hardware suspected. Replace cables. Then replace display. Then replace Arduino.
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Colleagues, have we canceled the rule of not analyzing code presented as a screenshot? 
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All I see is some gibberish gook, it does not look like code to me. What is shown can be easy to generate, how about you post the scanner code and the requested schematic. At this rate we can be at this come June.
Why not just buy new parts and try again. If that does not fix it do it again, eventually something will work.
I didn't analyse it. I recognised it. It's the usual i2c scanner sketch. Sans indentation.
Me?
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