Because wakelock_plus 1.1.3 depends on package_info_plus ^4.2.0 and no versions of wakelock_plus match >1.1.3 <2.0.0, wakelock_plus ^1.1.3 requires package_info_plus ^4.2.0.
So, because track_my_indoor_exercise depends on both package_info_plus ^5.0.1 and wakelock_plus ^1.1.3, version solving failed.