I am on ver 1.8.5
The page I get this on is when I try to managed the module.
Here is a stacktrace:
Printing Stack Trace: #0 [internal function]: UnknownException::setErrorHandler(8, 'Undefined varia...', '/...', 639, Array)
#1 .../vendors/monolog/monolog/src/Monolog/ErrorHandler.php(173): call_user_func(Array, 8, 'Undefined varia...', '/...', 639, Array)
#2 .../components/modules/namesilo/namesilo.php(639): Monolog\ErrorHandler->handleError(8, 'Undefined varia...', '/...', 639, Array)
#3 .../app/controllers/admin_company_modules.php(106): Namesilo->manageModule(Object(stdClass), Array)
#4 .../vendors/minphp/bridge/src/Lib/Dispatcher.php(142): AdminCompanyModules->manage()
#5 .../index.php(21): Dispatcher::dispatch('/admin/settings...')
#6 {main}