i/o error on post request for "HTTP://localhost:9411/API/V2/spans"

The complete error is:
: I/O error on POST request for “http://localhost:9411/api/v2/spans”: connect timed out; nested exception is : connect timed out
reason:
The dependency contains zipkin dependency, and does not configure zipkin-server. The default submission is 9411. The new version has removed the zipkin dependency.
Solution:
Delete zipkin dependencies in pom file:

<dependency>
	   <groupId>org.springframework.cloud</groupId>
	   <artifactId>spring-cloud-starter-zipkin</artifactId>
</dependency>

Original link:
/log4j/pig/issues/I161YA#note_2119281