App getting crashed even if no modification done to the code and the stack trace is same as the repackaged version of original app

My question is related to the repackaging of a mobile app. This app uses v1 signing scheme and I did the following: I fetched the apk file from the playstore using adb and I signed with my keystore using apksigner. Now, when I launch this app on my smartphone, it is showing the following exception. I took the original apk, I change the format to *.zip and unzipped it, and then again, converted back to apk and I applied zipalign on the apk. The apk gets successfully installed on the smartphone but when I launch this app, I am getting the following exception. In this scenario, I didn't modify any file. In the past, I have done this same process for few app's apk and the app is running successfully. If you observe the above two exception's image, the 1st three lines are same. My doubt is: - Irrespective of the signature change, we are getting the same exception (atleast the 1st three lines). What can be the reasons regarding the same? (Also, I have used the zipalign for the proper alignment) - Which type of framework this app is using such that even without changing the source code, the app is getting crashed? Any help/inputs regarding this domain is highly appreciated.