Hi everyone
I am building an image for HLK-7688AN and this is my first time build 
Most things I have left at the default settings, after chosing the MediaTek Ralink Target, and MT76x8 Base, I added the Alsa utilities and Mosquitto client. Everything else is pretty much default.
When building it fails with this at the end:
mjn3's trx replacement - v0.81.1
WARNING: maxlen exceeds default maximum! Beware of overwriting nvram!
fread failure or file "/home/kenny/openwrt/build_dir/target-mipsel_24kc_musl/linux-ramips_mt76x8/root.squashfs" too large
Makefile:201: recipe for target '/home/kenny/openwrt/build_dir/target-mipsel_24kc_musl/linux-ramips_mt76x8/tmp/openwrt-ramips-mt76x8-buffalo_wcr-1166ds-squashfs-sysupgrade.bin' failed
make[5]: *** [/home/kenny/openwrt/build_dir/target-mipsel_24kc_musl/linux-ramips_mt76x8/tmp/openwrt-ramips-mt76x8-buffalo_wcr-1166ds-squashfs-sysupgrade.bin] Error 1
make[5]: Leaving directory '/home/kenny/openwrt/target/linux/ramips/image'
Makefile:25: recipe for target 'install' failed
make[4]: *** [install] Error 2
make[4]: Leaving directory '/home/kenny/openwrt/target/linux/ramips'
Makefile:13: recipe for target 'install' failed
make[3]: *** [install] Error 2
make[3]: Leaving directory '/home/kenny/openwrt/target/linux'
time: target/linux/install#234.26#18.41#306.08
target/Makefile:23: recipe for target 'target/linux/install' failed
make[2]: *** [target/linux/install] Error 2
make[2]: Leaving directory '/home/kenny/openwrt'
target/Makefile:19: recipe for target '/home/kenny/openwrt/staging_dir/target-mipsel_24kc_musl/stamp/.target_install' failed
make[1]: *** [/home/kenny/openwrt/staging_dir/target-mipsel_24kc_musl/stamp/.target_install] Error 2
make[1]: Leaving directory '/home/kenny/openwrt'
/home/kenny/openwrt/include/toplevel.mk:225: recipe for target 'world' failed
make: *** [world] Error 2
Which I think means my image is too large for NVRAM? The HLK-7688AN has 128 MB Ram and 32MB Flash.
What should I check?