Php logs appears on console but throw javascript json decode error

[rmcamps]

Server php logs appear on chrome console but on the end it raise this error:
Error in event handler for (unknown): SyntaxError: Unexpected end of JSON input
at _decode (chrome-extension://noaneddfkdjfnfdakjjmocngnfkfehhd/log.js:156:21)
at _process (chrome-extension://noaneddfkdjfnfdakjjmocngnfkfehhd/log.js:164:26)
at _processQueue (chrome-extension://noaneddfkdjfnfdakjjmocngnfkfehhd/log.js:148:13)
at _run (chrome-extension://noaneddfkdjfnfdakjjmocngnfkfehhd/log.js:194:9)
at chrome-extension://noaneddfkdjfnfdakjjmocngnfkfehhd/log.js:204:13