calcBaseline, error when no clones to collapse

If the db file has the field clone, and the clone ids are unique, calcBaseline throws the error:

Collapsing clonal sequences... Error in cons_mat[2, ] : subscript out of bounds

Reproduce:

library(shazam)
data(ExampleDb, package="alakazam")
db <- subset(ExampleDb, ISOTYPE %in% c("IgA", "IgG") & SAMPLE == "+7d")
db <- db[1:10,]
db$CLONE <- 1:10
baseline <- calcBaseline(db, 
                         sequenceColumn="SEQUENCE_IMGT",
                         germlineColumn="GERMLINE_IMGT_D_MASK", 
                         testStatistic="focused",
                         regionDefinition=IMGT_V_NO_CDR3,
                         targetingModel = HS5FModel,
                         nproc=1)

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