Hi, well, I kinda disagree with Jacquelin and Joan to a certain point. The Techincial Issues that Adobe chose, would come under exposure, saturartion and contrast - bearing in mind that you uploaded as a photo? Focus is another category.
You should really have a read of this, plus other material from Adobe:
When we reject a file based on technical issues, we have identified technical flaws other than focus, exposure, or artifacts, which we call out specifically.
Photography and video technical issues include but aren’t limited to
White balance: The white balance may be too warm or too cool.
Note:
When you shoot in raw formats, you have great flexibility to adjust the white balance in your post-processing workflows.
Contrast: There may be too much or not enough contrast.
Saturation: Oversaturation may give your file an unnatural look, but under-saturated or spot color can also result in technical decline.
Note:
You may want to try the Vibrance slider instead of Saturation in Lightroom.
Selections: Editing must be done inconspicuously. Selecting objects out of their backgrounds (or masking) to composite into new images requires time, patience, and care. Do not submit images that have been poorly selected or look like they are not a natural part of the scene.
Chromatic aberration: Refers to color fringing around objects in the image.
General composition: Is your horizon straight? Have you cropped the image too much? Consider leaving a designer room to add their own text or objects.
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You'll see why then - although you may disagree with this - that it got a 'Technical Issue' rejection.
It has too much contrast and saturation.
Technical Issues and artistic abstraction are totally two different things. Here the upload is being looked at it from a technical viewpoint.