object ‘markvario’ is not exported by 'namespace:spatstat'

> library("Seurat")
Error: package or namespace load failed for ‘Seurat’:
 object ‘markvario’ is not exported by 'namespace:spatstat'
In addition: Warning message:
package ‘Seurat’ was built under R version 3.6.3

解決方法：

install.packages('devtools')

remove.packages(grep("spatstat", installed.packages(), value = T))

.rs.restartR()

devtools::install_version("spatstat", version = "1.64-1")