[PlantUML] Fontconfig error: No writable cache directories Fontconfig

[HillLiu]

fc-cache --really-force --verbose
fc-cache -rs  --verbose

Original PlantUML error

PlantUML rendering error: Failed to render inline diagram (Failed to generate PlantUML diagrams, PlantUML exited with code 200 (Fontconfig error: No writable cache directories Fontconfig error: No writable cache directories Fontconfig error: No writable cache directories Fontconfig error: No writable cache directories Fontconfig error: No writable cache directories Fontconfig error: No writable cache directories Error line 12 in file: /tmp/.tmpQMEgAc/3ffe8e9094b3f48ff36e1574191c60b29e2c5633.puml Some diagram description contains errors ).).

Fontconfig error: No writable cache directories