Recipe for target failed while building package

Hi, I am pretty new in developing for openwrt. I found this package ElonH/Rclone-OpenWrt: LuCI Support for Rclone. (github.com) and I wanted to install it on my openwrt router. I downloaded the correct sdk for my target, updated and installed feeds, put the package files in package/feeds , then did defconfig and menuconfig, but when I try to use make package/feeds/luci-app-rclone/compile i have this: WARNING: Makefile 'package/linux/Makefile' has a dependency on 'kmod-phy-bcm-ns-usb2', which does not exist WARNING: Makefile 'package/linux/Makefile' has a dependency on 'kmod-phy-bcm-ns-usb3', which does not exist env: 'time': No such file or directory package/Makefile:107: recipe for target 'package/feeds/packages/perl/prereq' failed make[3]: *** [package/feeds/packages/perl/prereq] Error 127 package/Makefile:101: recipe for target '/home/steak/openwrt18/staging_dir/target-mips_mips32_musl/stamp/.package_prereq' failed make[2]: *** [/home/steak/openwrt18/staging_dir/target-mips_mips32_musl/stamp/.package_prereq] Error 2 /home/steak/openwrt18/include/toplevel.mk:196: recipe for target 'prereq' failed make[1]: *** [prereq] Error 2 /home/steak/openwrt18/include/toplevel.mk:209: recipe for target 'package/feeds/luci-app-rclone/compile' failed make: *** [package/feeds/luci-app-rclone/compile] Error 2

what do I have to do to build it correctly?