help with express start

[VolgaChaser]

I'm trying to work through the wiki, but even the very first step which is all GUI based gets an error. I created a project, pressed play, created a table in training mode and pressed express start. I get this error.

Unexpected error: Wrong formatted data from gameserver 1 (method: createGame): JSON_ERROR_SYNTAX
Fatal error: Uncaught TypeError: VolgaTutorialHearts::{closure}(): Argument #1 ($player_id) must be of type int, array given in /var/tournoi/release/games/volgatutorialhearts/999999-9999/volgatutorialhearts.game.php:233 Stack trace: #0 [internal function]: VolgaTutorialHearts->{closure}(Array) #1 /var/tournoi/release/games/volgatutorialhearts/999999-9999/volgatutorialhearts.game.php(233): array_map(Object(Closure), Array) #2 /var/tournoi/release/tournoi-240809-1002-gs/www/game/module/table/table.game.php(401): VolgaTutorialHearts->setupNewGame(Array, Array) #3 /var/tournoi/release/tournoi-240809-1002-gs/www/game/module/gameserver/gameserver.game.php(175): Table->setupNewGameTable('...', Array, Array, false, Array) #4 /var/tournoi/release/tournoi-240809-1002-gs/www/action/gameserver/gameserver.action.php(60): Gameserver->createGame(Array) #5 /var/tournoi/release/tournoi-240809-1002-gs/www/action/gameserver/gameserver.action.php(68): action_gameserver->callClusterJob('...') #6 /var/tournoi/release/tournoi-240809-1002-gs/www/include/webActionCore.inc.php(191): action_gameserver->createGame() #7 /var/tournoi/release/tournoi-240809-1002-gs/www/index.php(366): launchWebAction('...', '...', '...', true, false, NULL, true, false) #8 {main} thrown in /var/tournoi/release/games/volgatutorialhearts/999999-9999/volgatutorialhearts.game.php on line 233
(reference: GS0 18/08 04:12:25)