looked at ↓ at +10546 (the position of my error), "LOCO 0 2" is 𝕨, next is invoked ≢, so ≢𝕨, which is only in a couple places in the source
https://dzaima.github.io/paste/#0lL1Lry5Jdp431684rokHDcEZtxVrlSEDdTsyAZKHaEozD1zuPuwuu7uKqKoWzKEnBEnJMGhBkAe2BgIJUPBAEwEa@DJo/RP@Av8EZz6597czLl@u6ALRbFSvnV9kvJFxeWLFG@/erf7zs@9@/vHTf3D8t@34j59s/@X@3/7@z//XcPyb9@@28BL35fs//PJdIJB/9ZO4B4Y9MB7/Rt5t2/F/@z@//@GLP9iftREaCS17aHx95udvv/3HX/2TPyQsESYvTzwes331FvZHH/7ojwnLhNWuhPFawkhgIdDGEoZLCc@XkSMyRK@ElbDklVAJy10J07WEiUAjUC4l3IsX8uvz/ukf/9fv4vbpu7//q//tCA8b4fpSyvTy3Hx9biYwIM0hYnotgL6V88MfxS8Ji4SFsYLipYKoy5AIzU…