tikzWheelchart error about WCvar

tikz - Wheelchart error about WCvarB being an undefined control sequence - Stack Overflow
I’d like to know why I get and how to correct the following error(.Feb-15-wheel-cal-fro-teach (minex1)
tikzWheelchart error about WCvarB being an undefined control sequenceStack Overflow
admin1天前
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