TestNG update related issue

Question

2 Issue :

1. While check for Update

2. While Updating TestNG

   I have tried to resolve by remove link from 'Install New Software' of dl.bintray and update lnik of Technology but still TestNG version is not updating. please guide me with this.

3. Cannot complete the install because one or more required items could not be found. Software being installed: TestNG P2 Feature 7.9.0.r202312310341 (org.testng.p2.feature.feature.group 7.9.0.r202312310341) Missing requirement: slf4j-api 1.7.36 (slf4j.api 1.7.36) requires 'java.package; org.slf4j.impl 1.6.0' but it could not be found Cannot satisfy dependency: From: TestNG P2 Feature 7.9.0.r202312310341 (org.testng.p2.feature.feature.group 7.9.0.r202312310341) To: org.eclipse.equinox.p2.iu; slf4j.api [1.7.36,1.7.36]

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by remove link from 'Install New Software' of dl.bintray and update lnik of Technology but still TestNG version is not updating.