You need to enable the console command using a mod like : https://www.nexusmods.com/theouterworlds2/mods/1?tab=description

If you want to remove a flaw use the command "FlawClearDebug"

if you want to add a flaw that you've rejected previously, use "FlawAddDebug"

if you want to trigger a flaw that was not offered to you yet, use "FlawOfferDebug"

Here's the list of flaws to use in commands:

0303_Flaw_Spe_N-Ray-Diated
0806_Flaw_Spe_Bibliomania
Flaw_Sys_AngerMismanagement
Flaw_Sys_BadKnees
Flaw_Sys_CompulsiveLiar
Flaw_Sys_Consumerism
Flaw_Sys_DangerouslyCurious
Flaw_Sys_Dependent
Flaw_Sys_DrugAddiction
Flaw_Sys_EasilyDistracted
Flaw_Sys_EasilyStartled
Flaw_Sys_EnergyHog
Flaw_Sys_Flawed
Flaw_Sys_FootInMouthSyndrome
Flaw_Sys_Hermit
Flaw_Sys_Kleptomania
Flaw_Sys_Luddite
Flaw_Sys_Overeater
Flaw_Sys_Overprepared
Flaw_Sys_ProfligateSpender
Flaw_Sys_RecklessLeadership
Flaw_Sys_Snobbish
Flaw_Sys_Sungazer
Flaw_Sys_Technophobia
Flaw_Sys_Teetotaler
Flaw_Sys_Treacherous
Flaw_Sys_TunnelVision
Flaw_Sys_Wasteful


Examples :

FlawOfferDebug Flaw_Sys_EasilyDistracted

FlawClearDebug Flaw_Sys_FootInMouthSyndrome