Problem with broken JSON.

[redesoftware]

I'm having the following problem. When Maxwell generates JSON for a change where the database field has an accent, it's breaking the JSON structure. For example:
"AVENIDA ANTONIO Cândido MACHADO - DE 1916/1917 AO FIM" is being generated by Maxwell:

"AVENIDA ANTONIO CC"ndido MACHADO", that is, with an extra quotation mark, breaking the JSON.

I've already set the following parameters in Maxwell's settings, but to no avail:

output_encoding=UTF-8
charset_connection=utf8mb4

Could someone help me?