technical diffculties

White balance, out of focus, artefacts. And I would add that if the tree to the right is your main subject, you also have a framing issue. Well, anyhow, it's not sharp.

If you are new to stock, you should consider these resources: https://helpx.adobe.com/stock/contributor/tutorials.html
Please read the contributor user manual for more information on Adobe stock contributions: https://helpx.adobe.com/stock/contributor/user-guide.html
See here for rejection reasons: https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
and especially quality and technical issues: https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html

I agree with what @Nancy OShea said, white balance is too blue, and there isn't much sharp or in focus when viewing at 100% in Lightroom.  

White balance is too blue.

https://www.adobe.com/creativecloud/photography/discover/white-balance.html

Also there are focus issues.  The depth of field is too shallow.

https://photographylife.com/what-is-depth-of-field

Adobe Stock customers expect the highest visual and technical quality for use in commercial projects.  Read these links for more tips what is expected from Stock Contributors.

• https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
• https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html
• https://helpx.adobe.com/stock/contributor/user-guide.html/stock/contributor/help/photography-illustrations.ug.html
• https://helpx.adobe.com/stock/how-to/tips-stock-image-acceptance.html

Better luck with your next submission. 🙂