Description of the false positive

The string is appended to the end of a URL. There is no XSS here.

URL to the alert on the project page on LGTM.com
https://lgtm.com/projects/g/MobSF/Mobile-Security-Framework-MobSF/snapshot/8fae9352bd3cb15fc7016a0ad9dbbd400bfa5e98/files/DynamicAnalyzer/views/android/dynamic_analyzer.py?sort=name&dir=ASC&mode=heatmap#x2313d0a373a97168:1