Error in emapplot_internal(x, showCategory = showCategory, ...) :

[JWDu0122]

p17 <- emapplot(bp_tree, node_label = "group", size_category=1)
Error in emapplot_internal(x, showCategory = showCategory, ...) :
object 'ggData' not found

[guidohooiveld]

Note that this is an issue with enrichplot, not clusterProfiler!

Yet, this has been addressed recently:
YuLab-SMU/enrichplot#339

Please let us know if your issue has been solved; if not please post again together with a reproducible example and the output of sessionInfo().