Jasp - Bayesian Repeated Measure ANOVA - between subject factor
I am trying to run a Bayesian Repeated ANOVA in JASP for Reaction times in a Go/Nogo task. I would like to insert a between-subject factor (right-left, coded as 1-0), unfortunately I get the error copied below. Before getting the error, the results of the analyses appear at this between-subject factor is very important (BF10 = 2539.87). One problem with the data is that there is an uneven number of participants (39vs40) in the two groups (corresponding to the between-subject factor). Infact, when I remove a participant the analysis works. How can I solve this issue without randomly eliminating one participant to make them even?
This analysis terminated unexpectedly.
Error in array(0, dim = c(steps, nparam, 2), dimnames = list(NULL, names(weightedMeans), : length of 'dimnames'  not equal to array extent
tryCatchOne(expr, names, parentenv, handlers[])
doTryCatch(return(expr), name, parentenv, handler)
withCallingHandlers(expr = analysis(jaspResults = jaspResults, dataset = dataset, options = options), error = .addStackTrace)
analysis(jaspResults = jaspResults, dataset = dataset, options = options)
.BANOVArunAnalysis(jaspResults, dataset, options, 'RM-ANOVA')
.BANOVAestimatePosteriors(jaspResults, dataset, options, model)
.BANOVAsamplePosteriors(jaspResults, dataset, options, model, posteriors)
array(0, dim = c(steps, nparam, 2), dimnames = list(NULL, names(weightedMeans), c('x', 'y')))