Invocation: 'dart pub get --no-example' Exception: 'type 'Null' is not a subtype of type 'int' in type cast'

[Reinoal]

Stack Trace:
#0 Session._refreshSessionData.parseContents (package:unified_analytics/src/session.dart:85:43)
#1 Session._refreshSessionData (package:unified_analytics/src/session.dart:89:7)
#2 new Session (package:unified_analytics/src/session.dart:28:5)
#3 new AnalyticsImpl (package:unified_analytics/src/analytics.dart:427:23)
#4 new Analytics (package:unified_analytics/src/analytics.dart:83:12)
#5 createUnifiedAnalytics (package:dartdev/src/unified_analytics.dart:23:10)
#6 DartdevRunner.runCommand (package:dartdev/dartdev.dart:182:27)
#7 CommandRunner.run. (package:args/command_runner.dart:122:25)
#8 new Future.sync (dart:async/future.dart:305:31)
#9 CommandRunner.run (package:args/command_runner.dart:122:14)
#10 runDartdev (package:dartdev/dartdev.dart:57:29)
#11 main (file:///Volumes/Work/s/w/ir/x/w/sdk/pkg/dartdev/bin/dartdev.dart:11:9)
#12 _delayEntrypointInvocation. (dart:isolate-patch/isolate_patch.dart:293:33)
#13 _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:184:12)

[mraleph]

Duplicate of #55212