Max7219 schematich

So i'm building a 15x7 led matrix and i used 2 max 7219, i wired them but i the led always blink out of control or dont turn on at all.
I think that the problem is the wiring with the 2 capacitors because i don't understand whats the arrow thats come out of the two capacitors is and i really dont understand how to wire the capacitors
Tahnk you.


Same arrow as on the chip. Should be connected to GND as the Max chip.

So the arrow has to ne connected to gnd of Arduino and also to gnd of max 7219 ?

Yes, the downward arrows indicate where ground connections are needed, just as the up arrows indicate +V connections.