Undefined Character (U+137DF)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𓟟` `𓟟`
UTF-8 Encoding:	`0xF0 0x93 0x9F 0x9F`
UTF-16 Encoding:	`0xD80D 0xDFDF`
UTF-32 Encoding:	`0x000137DF`

References