Resolve 20.1 (fdo 24.08) not starting: Failed to create application support directories

[RushingAlien]

  ➜ flatpak run com.blackmagic.Resolve
ActCCMessage Already in Table: Code= c005, Mode= 13, Level=  1, CmdKey= -1, Option= 0
ActCCMessage Already in Table: Code= c006, Mode= 13, Level=  1, CmdKey= -1, Option= 0
ActCCMessage Already in Table: Code= c007, Mode= 13, Level=  1, CmdKey= -1, Option= 0
ActCCMessage Already in Table: Code= 2282, Mode=  0, Level=  0, CmdKey= 8, Option= 0
log4cxx: No appender could be found for logger (BtCommon).
log4cxx: Please initialize the log4cxx system properly.
Failed to create application support directories