After upgrading to the following version of phabricator, git lfs no longer works for us:

phabricator 0d1654446be6de43b2bd12fcc247db0dc1a46464 (Sat, Jun 10) 
arcanist c04f141ab0231e593a513356b3832a30f9404627 (Fri, Jun 9) 
phutil 74a1350416eb2df825c2315d6519bee03f77bee9 (Mon, Jun 5)

It attempts to upload the files, but fails to do so with the following exception:

[Mon Jun 12 19:56:13.160045 2017] [:error] [pid 7296] [client 10.24.0.43:60889] [2017-06-12 19:56:13] EXCEPTION: (PhutilTypeCheckException) Parameter 'ttl.relative' has invalid type. Expected type 'optional int', got type 'null'. at [<phutil>/src/parser/PhutilTypeSpec.php:59]
[Mon Jun 12 19:56:13.160605 2017] [:error] [pid 7296] [client 10.24.0.43:60889] arcanist(head=master, ref.master=c04f141ab023), phabricator(head=master, ref.master=0d1654446be6), phutil(head=master, ref.master=74a1350416eb)
[Mon Jun 12 19:56:13.160636 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #0 <#2> PhutilTypeSpec::check(NULL, string) called at [<phutil>/src/parser/PhutilTypeSpec.php:169]
[Mon Jun 12 19:56:13.160652 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #1 <#2> PhutilTypeSpec::checkMap(array, array) called at [<phabricator>/src/applications/files/storage/PhabricatorFile.php:1330]
[Mon Jun 12 19:56:13.160666 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #2 <#2> PhabricatorFile::readPropertiesFromParameters(array) called at [<phabricator>/src/applications/files/storage/PhabricatorFile.php:390]
[Mon Jun 12 19:56:13.160680 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #3 <#2> PhabricatorFile::buildFromFileData(string, array) called at [<phabricator>/src/applications/files/storage/PhabricatorFile.php:419]
[Mon Jun 12 19:56:13.160698 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #4 <#2> PhabricatorFile::newFromFileData(string, array) called at [<phabricator>/src/applications/files/uploadsource/PhabricatorFileUploadSource.php:132]
[Mon Jun 12 19:56:13.160713 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #5 <#2> PhabricatorFileUploadSource::writeSingleFile() called at [<phabricator>/src/applications/files/uploadsource/PhabricatorFileUploadSource.php:45]
[Mon Jun 12 19:56:13.160727 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #6 <#2> PhabricatorFileUploadSource::uploadFile() called at [<phabricator>/src/applications/diffusion/controller/DiffusionServeController.php:1140]
[Mon Jun 12 19:56:13.160740 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #7 <#2> DiffusionServeController::serveGitLFSUploadRequest(PhabricatorRepository, PhabricatorUser, string) called at [<phabricator>/src/applications/diffusion/controller/DiffusionServeController.php:959]
[Mon Jun 12 19:56:13.160754 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #8 <#2> DiffusionServeController::serveGitLFSRequest(PhabricatorRepository, PhabricatorUser) called at [<phabricator>/src/applications/diffusion/controller/DiffusionServeController.php:411]
[Mon Jun 12 19:56:13.160767 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #9 <#2> DiffusionServeController::serveVCSRequest(PhabricatorRepository, PhabricatorUser) called at [<phabricator>/src/applications/diffusion/controller/DiffusionServeController.php:372]
[Mon Jun 12 19:56:13.160781 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #10 <#2> DiffusionServeController::serveRequest(AphrontRequest) called at [<phabricator>/src/applications/diffusion/controller/DiffusionServeController.php:99]
[Mon Jun 12 19:56:13.160794 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #11 <#2> DiffusionServeController::handleRequest(AphrontRequest) called at [<phabricator>/src/aphront/AphrontController.php:71]
[Mon Jun 12 19:56:13.160808 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #12 <#2> AphrontController::delegateToController(DiffusionServeController) called at [<phabricator>/src/applications/diffusion/controller/DiffusionController.php:27]
[Mon Jun 12 19:56:13.160832 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #13 <#2> DiffusionController::willBeginExecution() called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:255]
[Mon Jun 12 19:56:13.160848 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #14 <#2> AphrontApplicationConfiguration::processRequest(AphrontRequest, PhutilDeferredLog, AphrontPHPHTTPSink, MultimeterControl) called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:181]
[Mon Jun 12 19:56:13.160866 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #15 <#2> AphrontApplicationConfiguration::runHTTPRequest(AphrontPHPHTTPSink) called at [<phabricator>/webroot/index.php:17]
[Mon Jun 12 19:56:13.160881 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #16 phlog(PhutilTypeCheckException) called at [<phabricator>/src/aphront/response/AphrontUnhandledExceptionResponse.php:20]
[Mon Jun 12 19:56:13.160894 2017] [:error] [pid 7296] [client 10.24.0.43:60889] #17 AphrontUnhandledExceptionResponse::setException(PhutilTypeCheckException) called at [<phabricator>/webroot/index.php:21]

However, when I try to set ttl.relative to a value, it says that this config key does not exist:

 root@kerberos:/var/www/phabricator/phabricator# ./bin/config get ttf.relative
Usage Exception: No such configuration key 'ttf.relative'! Use `config list` to list all keys.
root@kerberos:/var/www/phabricator/phabricator# ./bin/config set ttf.relative 0
Usage Exception: No such configuration key 'ttf.relative'! Use `config list` to list all keys.

We ran the latest SQL migration script and there are no database issues reported. Still, I suspect something went wrong with an upgrade, not creating config keys that should have been created?

Any ideas what could have gone wrong or how to resolve the issue?