Fire and blood effects arn't showing up in GMod

Hey i got GMod about a month ago, and just today i discovered the Ignite tool (yes after that long) and i tried to start a watermelon on fire, and i couldn’t see the fire only hear it burning, it said something in console also, i cant remember what that was i may add it later though. i was just wondering if someone knew what is wrong. and the blood effects just appear as a white box with a white line in it. is there a way to fix it? Here is the things that appear in console
C_OP_RenderSprites::RenderUnsorted: Attempting to use an unimplemented sprite renderer for system “burning_character”!