Added check for whether file exists for migration file path

        public function getIsUpgradeSupported($compareVersion)

        {

            $isSameVersion = boolval(!strcmp($this->androidVersion, $compareVersion)); // Check if Android version is same

            $migrationContents = NULL;

            if(file_exists($this->migrationFilePath)) {

                $migrationContents = file_get_contents($this->migrationFilePath);

            }

            if (!empty($migrationContents)) {

                $migrations = json_decode($migrationContents, true); // Contains migration rules