Error when saving BedwarsRel configuration

Hello aternos team . When i try to save the following file it says "something went error ID: 5a3b4c59ec02d779-MRS
Error: 403"

File : files/plugins/BedwarsRel/config.yml

every time i try to configuration the plugin and save it this happens

Thanks you for every thing

ok i will try it

Thank you working fine