Invalid key hash. The key hash does not match any stored key hashes

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This is how i solved this problem

Download your APK to your PC in java jdk\bin folder

bin folder might look like this

C:\Program Files\Java\jdk1.7.0_121\bin

go to java jdk\bin folder and run cmd then
copy the following command in your cmd

keytool -list -printcert -jarfile yourapkname.apk

Copy the SHA1 value, which looks like this


and open to convert your SHA1 value to base64.
This is what Facebook requires. Copy base64 value and paste it in key hashes under settings->Basic -> Key hashes