Drone attempts to interpret drone.star file as yaml when building a tag

When pushing a tag that Drone should build I get the following error (in a red box in place of the build log):

yaml: unmarshal errors: line 9: cannot unmarshal !!str `BUILD_O...` into yaml.RawResource

Line 9 seems to refer to the line 9 of the star file:

The build on commit was successful but the same commit does not build as a tag. Also, I am the only person in the GitHub organization that experiences this issue. Anyone else can build tags successfully.