Hi @simonetta_2671 - It looks like the issue is caused by a text graphic placed over a PNG file. Nesting those layers should resolve the error and allow the export to complete successfully.
To nest them:
1. Select both the text and PNG layers in your timeline.
2. Right-click on the selection and choose Nest.
3. Give the new nested sequence a name and click OK.
This will group the layers into a single sequence and help Premiere process them more cleanly during export.