Fatal error: Uncaught DomainException: Unable to read the credential file specified by GOOGLE_APPLICATION_CREDENTIALS: file mp3srt.json does not exist in /var/www/html/vendor/google/auth/src/CredentialsLoader.php:74 Stack trace: #0 /var/www/html/vendor/google/auth/src/ApplicationDefaultCredentials.php(147): Google\Auth\CredentialsLoader::fromEnv() #1 /var/www/html/vendor/google/gax/src/CredentialsWrapper.php(197): Google\Auth\ApplicationDefaultCredentials::getCredentials(Array, Object(Google\Auth\HttpHandler\Guzzle6HttpHandler), NULL, NULL) #2 /var/www/html/vendor/google/gax/src/CredentialsWrapper.php(114): Google\ApiCore\CredentialsWrapper::buildApplicationDefaultCredentials(Array, Object(Google\Auth\HttpHandler\Guzzle6HttpHandler)) #3 /var/www/html/vendor/google/gax/src/GapicClientTrait.php(326): Google\ApiCore\CredentialsWrapper::build(Array) #4 /var/www/html/vendor/google/gax/src/GapicClientTrait.php(308): Google\Cloud\Speech\V1\Gapic\SpeechGapicClient->createCredentialsWrapper(NULL, Array) #5 /var/www/html/vendor/go in /var/www/html/vendor/google/gax/src/CredentialsWrapper.php on line 200