Undefined Character (U+138FE)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𓣾` `𓣾`
UTF-8 Encoding:	`0xF0 0x93 0xA3 0xBE`
UTF-16 Encoding:	`0xD80E 0xDCFE`
UTF-32 Encoding:	`0x000138FE`

References