Android app crashing. OS(?)

Hi. I designed one experiment that I need to run on an Android tablet. When I test the experiment, it works just fine. However, when I copy the file to my tablet, I open the OpenSesame app and select the folder, then the experiment, and then I set the participant's number. Just when it is about to start, the app crashes and the experiment doesn't run. When I check the debug file, it reads the following error messages

failed to load plugin 'form_text_display'

item-stack:
exception type: ImportError
exception message: No module named items.qtautoplugin

Traceback:
File "opensesame/libopensesame/item_store.py", line 161, in new
File "opensesame/libopensesame/plugins.py", line 361, in load_plugin
File "opensesame/libopensesame/plugins.py", line 338, in import_plugin
File "opensesame/opensesame_plugins/form_text_display/form_text_display.py", line 22, in <module>
ImportError: No module named items.qautoplugin

The thing is, my tablet has Android 7.0 and, when I tried running the very same file on a different tablet (with Android 6.0) I didn't have any problems and I could complete the experiment.

Is there a problem with the form plugin on Android 7.0 that crashes the app? Am I missing something important to set up before I run it on this OS? Is the app not working on Nougat?