magento2 – Getting array brackets in magento 2 log

I am trying to print the log using logger method in magento 2, while printing i am getting 2 empty array brackets in the log. Can anybody say why it happens like this and how to remove those brackets?

sample log response
Coveolog.INFO: {“message”:”Source with name ‘dss-coveo_m2-integration-b2c-product-en_us’ already exists.”,”errorCode”:”INVALID_SOURCE_CONFIGURATION”,”requestID”:”47abdd9f-0ae6-4ed4-a19f-c995d4e62f2c”} [] []