I got same issue using springfox-swagger2 and springfox-swagger-ui version(3.0.0), spring-boot version(2.6.2)
The way to resolve this issue is by adding pathmatcher in application. properties or application.yml
for application.properties:
spring.mvc.pathmatch.matching-strategy = ANT_PATH_MATCHER
for application.yml:
spring:
mvc:
pathmatch:
matching-strategy: ant_path_matcher