game freeze during gytha fight

[Jet724]

during the required gytha fight the game will pause with no option on the bottom row and you cant click anything
it seems to happen when you kill demons shadow
Edit: playing on a mac, on google chrome (idk how to see what version sorry)

error code :
cordova.js:1 Failed to load resource: the server responded with a status of 404 (Not Found)
DemonsShadow.js:81 Uncaught TypeError: (intermediate value).$1bat is not a function
at t.value (DemonsShadow.js:81)
at t.value (Creature.js:634)
at Function.value (CombatHelper.js:77)
at t.value (Power.js:199)
at SpellPowers.js:564
at Array.map (<anonymous>)
at t.value (SpellPowers.js:561)
at t.value (Power.js:113)
at PlayerCharacter.js:447
at Object.func (PlayerCharacter.js:448)