Unable to insure items

When I go to insure my items it comes up with the insure tab but in the server console it displays "[WARNING] No multiplier found for trader {Trader Name}, check it exists in InsuranceConfig.js, falling back to a default value of 0.3" and sometimes I can insure my items before selecting PMC or Scav but after I have to close and reopen the game and server. I found another thread here that was solved but the solution doesn't apply to my problem.

i did it and worked fine, reinstalled the mods and everything is back to normal.