JKS KeyStore not available

Question

I'm providing the keystore path but it returns exception android.system.errnoexception open failed eacces (permission denied). I've also given the read and write permissions and used android:requestLegacyExternalStorage="true".

public static String generateSignature(String data) throws Exception {

   String jksFilepath = "/storage/emulated/0/key/KeyDemoo.jks";

        File file=new File(jksFilepath);
        try {
          
            Log.e("TAG", "generateSignature:try ");

            Log.e("TAG", "generateSignature: "+file.getPath());

            InputStream fileInputStream = new FileInputStream(file.getPath());

            // Loading Keystore
            // System.out.println("loading keystore");
            ks.load(fileInputStream, JKSPassword);
            Enumeration<String> e = ks.aliases();

            while (e.hasMoreElements()) {
                alias = e.nextElement();
                // System.out.println("Alias of the e-Token : "+ alias);

                UserCert = (X509Certificate) ks.getCertificate(alias);

                UserCertPubKey = (PublicKey) ks.getCertificate(alias).getPublicKey();

                // System.out.println("loading Private key");
                UserCertPrivKey = (PrivateKey) ks.getKey(alias, JKSPassword);
            }

            // Method Call to generate Signature
            signature = MakeSignature(data);

            return signature;

        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("generateSignature" + e.getCause());
            throw new Exception();
        }

}