Thanks for reaching out. We are sorry for the trouble with Lightroom. We are here to help.
Could you please share the version of Adobe Lightroom you are working on?
Does this happen with all the images in Lightroom, or is it an issue with a recent set or batch of files? Do you shoot in RAW or JPEG?
Would you mind sharing a few sample images with us? Does this happen when you open the image in Lightroom, or does it happen after exporting the image from Lightroom?
You can try to change the SD Card on the camera and take some new images as a test.
We hope to hear from you soon.