[Version 0.7.15] Critical Error Whilst Fighting Bestial Alissa

[CartCarl]

I was fighting Bestial Alissa and beat her first phase, the move I used to beat her was Primal Scar, and there was only Etheryn Clone B alive in the party apart from her when I beat her. This is the error message that I got.

TypeError: Cannot read properties of null (reading 'owner') at i.value (https://www.fenoxo.com/play/CoC2/release/manifest.72327ed65d2e71385db5.js:2:347825) at i.value (https://www.fenoxo.com/play/CoC2/release/manifest.72327ed65d2e71385db5.js:2:291308) at Function.value (https://www.fenoxo.com/play/CoC2/release/manifest.72327ed65d2e71385db5.js:2:202718) at n.value (https://www.fenoxo.com/play/CoC2/release/manifest.72327ed65d2e71385db5.js:2:232660) at https://www.fenoxo.com/play/CoC2/release/manifest.72327ed65d2e71385db5.js:2:6001635 at Array.forEach () at n.value (https://www.fenoxo.com/play/CoC2/release/manifest.72327ed65d2e71385db5.js:2:6001590) at e.value (https://www.fenoxo.com/play/CoC2/release/manifest.72327ed65d2e71385db5.js:2:4784114) at e.value (https://www.fenoxo.com/play/CoC2/release/manifest.72327ed65d2e71385db5.js:2:4782255) at e.value (https://www.fenoxo.com/play/CoC2/release/manifest.72327ed65d2e71385db5.js:2:4781714)

I have tried to replicate the bug, but have not been able to.
I am playing the game on Chrome's latest version. I would've posted an image but I do not know how to.