attachments crashing gradle

how do i get attachments to work, if i set it to export as any of the attachment options it crashes gradle

Change the line "import com.flansmods.common.vector.Vector3f;" to "import com.flansmod.common.vector.Vector3f;" and it'll work.

thank you, also how do i make an attachment change fire modes like the full auto mod in the official packs does

also how do i make it able to be attached to a gun? even though i set it to be allowed on the gun im trying it on it wont let me attach it

1: You need to set "ModeOverride" to either FullAuto, SemiAuto or Burst.
2: It depends. If your gun has "AllowAllAttachments True" then it's the attachment fault, if it allows only specified attachments then it means that you need to change the shortname of the attachment to correct one. Example: Gun has "AllowAttachments swsilencer" then shortname of your attachment should also be "swsilencer". If everything with it is fine then check the attachment settings, especially the "AttachmentType" line.