using QGIS 3.14.1 and Qfield 1.5.3 with a Samsung Galaxy TAB A (2016)
I have created a Project in QGIS for use in Qfield. I am able to open the project in QField on the tablet and edit the layers with no problem. However when I import the project back to the laptop and open in QGIS I get a message to handle bad layers for any layers I have edited (the rest are fine) and then when I navigate to the source of the layer I get an 'invalid data source' error and the layer won't open.
This happens whether I use Qfield sync to package the project or not.
File paths are set to relative.
I have tried using QGS rather than QGZ - same outcome.
I have made sure versions of QGIS and Qfield are up to date.