Null check error in package versions page rendering

[sigurdm]

Error: Null check operator used on a null value
    at renderPkgVersionsPage (package:pub_dev/frontend/templates/package_versions.dart:68:63)
    at packageVersionsListHandler.<fn> (package:pub_dev/frontend/handlers/package.dart:93:14)
    at _handlePackagePage (package:pub_dev/frontend/handlers/package.dart:330:28)
    at RouterEntry.invoke.<fn> (package:shelf_router/src/router_entry.dart:109:14)
    at RouterEntry.invoke (package:shelf_router/src/router_entry.dart:104:12)
    at Router.call (package:shelf_router/src/router.dart:184:26)
    at createAppHandler.<fn> (package:pub_dev/frontend/handlers.dart:74:17)
    at _redirectLoopDetectorWrapper.<fn> (package:pub_dev/shared/handler_helpers.dart:93:16)
    at _cspHeaderWrapper.<fn> (package:pub_dev/shared/handler_helpers.dart:147:16)
    at _userAuthWrapper.<fn>.<fn> (package:pub_dev/shared/handler_helpers.dart:243:34)
    at AccountBackend.withBearerToken (package:pub_dev/account/backend.dart:270:14)
    at _userAuthWrapper.<fn> (package:pub_dev/shared/handler_helpers.dart:242:12)
    at _requestContextWrapper.<fn> (package:pub_dev/shared/handler_helpers.dart:135:14)
    at _httpsWrapper.<fn> (package:pub_dev/shared/handler_helpers.dart:258:25)
    at _sanitizeRequestWrapper.<fn> (package:pub_dev/shared/handler_helpers.dart:226:12)
    at _logRequestWrapper.<fn> (package:pub_dev/shared/handler_helpers.dart:171:14)
    at handleRequest (package:shelf/shelf_io.dart:140:16)