A problem occurred evaluating root project 'Gradle_Challenge': Failed to apply plugin 'com.jfrog.artifactory'

[clayly]

Error while following instructions for Gradle from
https://www.jfrog.com/confluence/display/JFROG/QuickStart+Guide%3A+Maven+and+Gradle.

Previously tried same insructions for Maven and worked OK.

Repo commit: 2295f6a

Shell:

fish, version 3.2.1

Gradle:

------------------------------------------------------------
Gradle 6.7.1
------------------------------------------------------------

Build time:   2020-11-16 17:09:24 UTC
Revision:     2972ff02f3210d2ceed2f1ea880f026acfbab5c0

Kotlin:       1.3.72
Groovy:       2.5.12
Ant:          Apache Ant(TM) version 1.10.8 compiled on May 10 2020
JVM:          11.0.10 (Red Hat, Inc. 11.0.10+9)
OS:           Linux 5.11.7-200.fc33.x86_64 amd64

SDKMAN!:

SDKMAN 5.11.0+644

OS:

LSB Version:	:core-4.1-amd64:core-4.1-noarch
Distributor ID:	Fedora
Description:	Fedora release 33 (Thirty Three)
Release:	33
Codename:	ThirtyThree

Full error log:

***@localhost ~/p/d/j/D/Gradle_Challenge (master) [1]> jfrog rt gradle-config
Configuration file already exists at /home/***/projects/demo/jfrog-demo/DevRel/Gradle_Challenge/.jfrog/projects/gradle.yaml. Override it? (y/n) [n]? y
Resolve dependencies from Artifactory? (y/n) [y]? y
Set Artifactory server ID [Default-Server]: 
Set repository for dependencies resolution (press Tab for options): maven-challenge-remote
Deploy project artifacts to Artifactory? (y/n) [y]? 
Set Artifactory server ID [Default-Server]: 
Set repository for artifacts deployment (press Tab for options): maven-challenge-local
Deploy Maven descriptors? (y/n) [n]? 
Deploy Ivy descriptors? (y/n) [n]? 
Is the Gradle Artifactory Plugin already applied in the build script? (y/n) [n]? 
Use Gradle wrapper? (y/n) [n]? 
[Info] gradle build config successfully created.
***@localhost ~/p/d/j/D/Gradle_Challenge (master)> jfrog rt gradle clean artifactoryPublish -b build.gradle --build-name gradle-challenge --build-number 1.0.0
[Info] Running gradle command: /home/***/.sdkman/candidates/gradle/current/bin/gradle --init-script /home/***/.jfrog/dependencies/gradle/4.18.0/gradle.init clean artifactoryPublish -b build.gradle

FAILURE: Build failed with an exception.

* Where:
Build file '/home/***/projects/demo/jfrog-demo/DevRel/Gradle_Challenge/build.gradle' line: 27

* What went wrong:
A problem occurred evaluating root project 'Gradle_Challenge'.
> Failed to apply plugin 'com.jfrog.artifactory'.
   > Cannot cast object 'org.jfrog.gradle.plugin.artifactory.dsl.ArtifactoryPluginConvention@1840d5d1' with class 'org.jfrog.gradle.plugin.artifactory.dsl.ArtifactoryPluginConvention' to class 'org.jfrog.gradle.plugin.artifactory.dsl.ArtifactoryPluginConvention'

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 1s
[Error] exit status 1
***@localhost ~/p/d/j/D/Gradle_Challenge (master) [1]> jfrog --version
jfrog version 1.45.2