Bad HTTP parsed

Enonic version: 6.5.2

I’m getting this error in some objects on my repository, not all, so, I think this is not a content-type error. The objects are created by a service and then published. Someone know what is going on?

14:15:17.964 WARN org.eclipse.jetty.http.HttpParser - bad HTTP parsed: 400 Illegal character 0x0 for HttpChannelOverHttp@7c5bc6ed{r=0,c=false,a=IDLE,uri=null}
14:15:27.968 WARN org.eclipse.jetty.http.HttpParser - Illegal character 0x4 in state=START for buffer HeapByteBuffer@337872d4[p=1,l=10,c=8192,r=9]={\x04<<<\x01\x00P\xC0c\xF660\x00>>>02 Found\r\nDate: M…\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}