What to do when my Panasonic Eluga L2 says system damaged when trying to update after unrooting?

i rooted my panasonic eluga 12 and unrooted it when i update the software it shaws system damaged what to do help me i love my phone
I didn't know that rooting is so bad my friends told it is good.so sad

How to copy apas in memory card in panasonic eluga 12 

I can't access move option

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