Error in MixSIAR: Cannot combine sources

[chandrimashaw]

Hello Brian, I am using the MixSIAR model, but I am to combine 2 sources together. Although my sources name in the source.csv file and my inputted source name to combine is same, I am getting the following error.

#Source names in 'groups' list do not match those in 'source$source_names'. All previous sources must appear in 'groups'.