Makefile missing separator error

[cloudJojo]

When compiling, the following error occurs.
I changed spaces to tabs as told by chat gpt or google, but the same problem occurs.

------------------------ error --------------------------------------
make[3]: Entering directory /mnt/sdb1/home/cloud/5G/20230401_netmanager/qsdk/feeds/luci_proto_modemmanager/luci-proto-modemmanager' Makefile:54: *** missing separator. Stop. make[3]: Leaving directory /mnt/sdb1/home/cloud/5G/20230401_netmanager/qsdk/feeds/luci_proto_modemmanager/luci-proto-modemmanager'
make[2]: *** [package/feeds/luci_proto_modemmanager/luci-proto-modemmanager/compile] Error 2
make[2]: Leaving directory `/mnt/sdb1/home/cloud/5G/20230401_netmanager/qsdk'
make[1]: *** [/mnt/sdb1/home/cloud/5G/20230401_netmanager/qsdk/staging_dir/target-aarch64_cortex-a53_musl-1.1.16/stamp/.package_compile] Error 2

[cyqtmxk]

due to the tap is replaced by 4 spaces on line 37-39， line50 and 51，just replace the spaces with tap , in Vim you can use "Ctrl+v+i " to type "tap"