Fatal error: Uncaught Exception: /usr/www/users/tuepei/1.39.4/extensions/Echo/extension.json is not a valid JSON file. in /usr/www/users/tuepei/1.39.4/includes/registration/ExtensionRegistry.php:394
Stack trace:
#0 /usr/www/users/tuepei/1.39.4/includes/registration/ExtensionRegistry.php(276): ExtensionRegistry->readFromQueue()
#1 /usr/www/users/tuepei/1.39.4/includes/Setup.php(278): ExtensionRegistry->loadFromQueue()
#2 /usr/www/users/tuepei/1.39.4/includes/WebStart.php(86): require_once('/usr/www/users/...')
#3 /usr/www/users/tuepei/1.39.4/index.php(44): require('/usr/www/users/...')
#4 {main}
thrown in /usr/www/users/tuepei/1.39.4/includes/registration/ExtensionRegistry.php on line 394