You have run CvPcb for the first time using the new footprint library table method for finding footprints.
CvPcb has either copied the default table or created an empty table in your home folder.
You must first configure the library table to include all footprint libraries not included with KiCad.
See the “Footprint Library Table” section of the CvPcb documentation for more information. Checking sheet names...
Checking bus conflicts...
Checking conflicts...
Checking units...
Checking footprints...
Checking pins...
Checking similar labels...
Checking local and global labels...
Checking for unresolved variables...
Checking no connect pins for connections...
Checking for library symbol issues...
Checking for footprint link issues...
Checking for off grid pins and wires...
Checking for labels on more than one wire...
Checking for undefined netclasses...
Found 0 violations
Saved ERC Report to erc.json
{
  "kicad_version": "9.0.2",
  "components": 27,
  "connected_nets": 20,
  "unused_header_pins": 24,
  "erc_errors": 0,
  "erc_warnings": 0,
  "erc_exclusions": 0,
  "netlist_contract_passed": true,
  "gpio_mutation_rejected": true,
  "resistor_bypass_mutation_rejected": true,
  "colour_group_short_mutation_rejected": true,
  "wrong_yellow_gpio_mutation_rejected": true,
  "scope": "Schematic-only. No target firmware build or physical test."
}
