Be sure that the roles are not out of range for the bot, for instance, if the bot's role is below the role you want to give, it wont be able because in the hierarchy, it lacks permission (yes, role order are important)
#DiscordAPIError Missing Permissions
hearty vapor
simple hatchBOT
Tag suggestion for @tacit harbor:
• Bots cannot moderate (kick/ban/nickname/...) a target with a higher or equally high highest role or the guild owner.
• Bots cannot modify (edit/add/remove) roles that are higher or equally high compared to the bot's highest role.
• The ADMINISTRATOR permission does not skip these checks.
hearty vapor
*Tag suggestion for <@456226577798135808>:*
• Bots cannot moderate (kick/ban/nic...
Exactly
It's okay