Since you have 145 pixels, they are numbered 0 ~ 144. So change the 2nd SubBlade to “5,144” like so:
BladeConfig blades[] = {
{0,SubBlade (0,4, WS281XBladePtr<145,bladePin, Color8::GRB, PowerPINS<bladePowerPin2, bladePowerPin3>>() ),
SubBlade (5,144, NULL),
CONFIGARRAY(presets)},
};