Default [Q] Camera not working in JB 4.3 root + lock bootloader

i have root my xperia sp with firmware JB 4.3 and lock bootloader and it working well and smooth, but the problem is when i use systemapp and delete some bloatware. i think i have delete usable application. it make my camera not working. when i click camera from menu it say " unfortunately app stop working "

please help me to fix it..