Nevermind, it seems that the map is still unplayable even if loaded in the same instance: herowo.io. The error message does not show up on any action.
I noticed that i can build buildings in castle, the hero can move, i can end the day as well, but everything stops when i attack a creature. Nothing happens when i attack a creature. Afterwards, I can change the route of the hero on map, but he does not take any action.
I also noticed that I can move the second hero by actions, but not with animations:
As it can be seen in the image, the hero has been moved where the route starts.
The error message seems to be the same from the herowo.game.
Audio buffer error : : Failed to execute ‘decodeAudioData’ on ‘BaseAudioContext’: Unable to decode audio data
Uncaught TypeError: Cannot convert undefined or null to object,https://herowo.io/client/sqimitive/async.js,778,7,TypeError: Cannot convert undefined or null to object
Uncaught TypeError: Cannot convert undefined or null to object,https://herowo.io/client/nodash/main.js,257,16,TypeError: Cannot convert undefined or null to object
Uncaught TypeError: Cannot convert undefined or null to object,https://herowo.io/client/nodash/main.js,257,16,TypeError: Cannot convert undefined or null to object
Uncaught TypeError: Cannot convert undefined or null to object,https://herowo.io/client/sqimitive/async.js,778,7,TypeError: Cannot convert undefined or null to object
Uncaught HeroWO.RPC.ClientError: Unspecified Error,https://herowo.io/client/sqimitive/async.js,778,7,HeroWO.RPC.ClientError: Unspecified Error
EDIT: I think this should be a Major issue/failure and should be prioritised because no one wants to play a map and not be able to continue it. It could be very discouraging for players.