please help me

I have problem with installing gapps on my galaxy s 4 i9500 Cm 12.1
I flash zip normally on recovery but he tell install failed
Finding update package
Opening update package
Installing update...
Error10:failed to set-up open gapps pre-bundled busybox binary
Please use twrp as recovery instead
Error installation error in |sideload|package.zip
Status1

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