"ax was not found in any of the following sources:"

I’ve been scouting the forum for similar topics, but my issue is different. This project was able to build about last month; other users are able to build it, yet it fails to build for me with the following error:

* Exception is:
org.gradle.api.plugins.UnknownPluginException: Plugin [id: 'org.springframework.boot', version: '3.1.3'] was not found in any of the following sources:

- Gradle Core Plugins (plugin is not in 'org.gradle' namespace)
- Plugin Repositories (could not resolve plugin artifact 'org.springframework.boot:org.springframework.boot.gradle.plugin:3.1.3')
  Searched in the following repositories:
    Gradle Central Plugin Repository
	at org.gradle.plugin.use.internal.DefaultPluginRequestApplicator.resolveToFoundResult(DefaultPluginRequestApplicator.java:237)
	at org.gradle.plugin.use.internal.DefaultPluginRequestApplicator.lambda$resolvePluginRequests$3(DefaultPluginRequestApplicator.java:167)
	at org.gradle.util.internal.CollectionUtils.collect(CollectionUtils.java:212)
	at org.gradle.util.internal.CollectionUtils.collect(CollectionUtils.java:206)
	at org.gradle.plugin.use.internal.DefaultPluginRequestApplicator.resolvePluginRequests(DefaultPluginRequestApplicator.java:165)
	at org.gradle.plugin.use.internal.DefaultPluginRequestApplicator.applyPlugins(DefaultPluginRequestApplicator.java:100)
	at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl.apply(DefaultScriptPluginFactory.java:117)
	at org.gradle.configuration.BuildOperationScriptPlugin$1.run(BuildOperationScriptPlugin.java:65)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:29)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:26)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.run(DefaultBuildOperationRunner.java:47)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:68)
	at org.gradle.configuration.BuildOperationScriptPlugin.lambda$apply$0(BuildOperationScriptPlugin.java:62)
	at org.gradle.configuration.internal.DefaultUserCodeApplicationContext.apply(DefaultUserCodeApplicationContext.java:44)
	at org.gradle.configuration.BuildOperationScriptPlugin.apply(BuildOperationScriptPlugin.java:62)
	at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.lambda$applyToMutableState$1(DefaultProjectStateRegistry.java:395)
	at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.fromMutableState(DefaultProjectStateRegistry.java:413)
	at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.applyToMutableState(DefaultProjectStateRegistry.java:394)
	at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildScriptProcessor.java:46)
	at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildScriptProcessor.java:27)
	at org.gradle.configuration.project.ConfigureActionsProjectEvaluator.evaluate(ConfigureActionsProjectEvaluator.java:35)
	at org.gradle.configuration.project.LifecycleProjectEvaluator$EvaluateProject.lambda$run$0(LifecycleProjectEvaluator.java:109)
	at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.lambda$applyToMutableState$1(DefaultProjectStateRegistry.java:395)
	at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.lambda$fromMutableState$2(DefaultProjectStateRegistry.java:418)
	at org.gradle.internal.work.DefaultWorkerLeaseService.withReplacedLocks(DefaultWorkerLeaseService.java:345)
	at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.fromMutableState(DefaultProjectStateRegistry.java:418)
	at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.applyToMutableState(DefaultProjectStateRegistry.java:394)
	at org.gradle.configuration.project.LifecycleProjectEvaluator$EvaluateProject.run(LifecycleProjectEvaluator.java:100)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:29)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:26)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.run(DefaultBuildOperationRunner.java:47)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:68)
	at org.gradle.configuration.project.LifecycleProjectEvaluator.evaluate(LifecycleProjectEvaluator.java:72)
	at org.gradle.api.internal.project.DefaultProject.evaluate(DefaultProject.java:782)
	at org.gradle.api.internal.project.DefaultProject.evaluate(DefaultProject.java:156)
	at org.gradle.api.internal.project.ProjectLifecycleController.lambda$ensureSelfConfigured$2(ProjectLifecycleController.java:84)
	at org.gradle.internal.model.StateTransitionController.lambda$doTransition$14(StateTransitionController.java:255)
	at org.gradle.internal.model.StateTransitionController.doTransition(StateTransitionController.java:266)
	at org.gradle.internal.model.StateTransitionController.doTransition(StateTransitionController.java:254)
	at org.gradle.internal.model.StateTransitionController.lambda$maybeTransitionIfNotCurrentlyTransitioning$10(StateTransitionController.java:199)
	at org.gradle.internal.work.DefaultSynchronizer.withLock(DefaultSynchronizer.java:34)
	at org.gradle.internal.model.StateTransitionController.maybeTransitionIfNotCurrentlyTransitioning(StateTransitionController.java:195)
	at org.gradle.api.internal.project.ProjectLifecycleController.ensureSelfConfigured(ProjectLifecycleController.java:84)
	at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.ensureConfigured(DefaultProjectStateRegistry.java:369)
	at org.gradle.execution.TaskPathProjectEvaluator.configure(TaskPathProjectEvaluator.java:33)
	at org.gradle.execution.TaskPathProjectEvaluator.configureHierarchy(TaskPathProjectEvaluator.java:47)
	at org.gradle.configuration.DefaultProjectsPreparer.prepareProjects(DefaultProjectsPreparer.java:42)
	at org.gradle.configuration.BuildTreePreparingProjectsPreparer.prepareProjects(BuildTreePreparingProjectsPreparer.java:65)
	at org.gradle.configuration.BuildOperationFiringProjectsPreparer$ConfigureBuild.run(BuildOperationFiringProjectsPreparer.java:52)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:29)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:26)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.run(DefaultBuildOperationRunner.java:47)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:68)
	at org.gradle.configuration.BuildOperationFiringProjectsPreparer.prepareProjects(BuildOperationFiringProjectsPreparer.java:40)
	at org.gradle.initialization.VintageBuildModelController.lambda$prepareProjects$2(VintageBuildModelController.java:84)
	at org.gradle.internal.model.StateTransitionController.lambda$doTransition$14(StateTransitionController.java:255)
	at org.gradle.internal.model.StateTransitionController.doTransition(StateTransitionController.java:266)
	at org.gradle.internal.model.StateTransitionController.doTransition(StateTransitionController.java:254)
	at org.gradle.internal.model.StateTransitionController.lambda$transitionIfNotPreviously$11(StateTransitionController.java:213)
	at org.gradle.internal.work.DefaultSynchronizer.withLock(DefaultSynchronizer.java:34)
	at org.gradle.internal.model.StateTransitionController.transitionIfNotPreviously(StateTransitionController.java:209)
	at org.gradle.initialization.VintageBuildModelController.prepareProjects(VintageBuildModelController.java:84)
	at org.gradle.initialization.VintageBuildModelController.getConfiguredModel(VintageBuildModelController.java:64)
	at org.gradle.internal.build.DefaultBuildLifecycleController.lambda$withProjectsConfigured$1(DefaultBuildLifecycleController.java:130)
	at org.gradle.internal.model.StateTransitionController.lambda$notInState$3(StateTransitionController.java:132)
	at org.gradle.internal.work.DefaultSynchronizer.withLock(DefaultSynchronizer.java:44)
	at org.gradle.internal.model.StateTransitionController.notInState(StateTransitionController.java:128)
	at org.gradle.internal.build.DefaultBuildLifecycleController.withProjectsConfigured(DefaultBuildLifecycleController.java:130)
	at org.gradle.internal.build.DefaultBuildToolingModelController.locateBuilderForTarget(DefaultBuildToolingModelController.java:57)
	at org.gradle.internal.buildtree.DefaultBuildTreeModelCreator$DefaultBuildTreeModelController.lambda$locateBuilderForTarget$0(DefaultBuildTreeModelCreator.java:73)
	at org.gradle.internal.build.DefaultBuildLifecycleController.withToolingModels(DefaultBuildLifecycleController.java:278)
	at org.gradle.internal.build.AbstractBuildState.withToolingModels(AbstractBuildState.java:140)
	at org.gradle.internal.buildtree.DefaultBuildTreeModelCreator$DefaultBuildTreeModelController.locateBuilderForTarget(DefaultBuildTreeModelCreator.java:73)
	at org.gradle.internal.buildtree.DefaultBuildTreeModelCreator$DefaultBuildTreeModelController.locateBuilderForDefaultTarget(DefaultBuildTreeModelCreator.java:68)
	at org.gradle.tooling.internal.provider.runner.DefaultBuildController.getTarget(DefaultBuildController.java:157)
	at org.gradle.tooling.internal.provider.runner.DefaultBuildController.getModel(DefaultBuildController.java:101)
	at org.gradle.tooling.internal.consumer.connection.ParameterAwareBuildControllerAdapter.getModel(ParameterAwareBuildControllerAdapter.java:39)
	at org.gradle.tooling.internal.consumer.connection.UnparameterizedBuildController.getModel(UnparameterizedBuildController.java:113)
	at org.gradle.tooling.internal.consumer.connection.NestedActionAwareBuildControllerAdapter.getModel(NestedActionAwareBuildControllerAdapter.java:31)
	at org.gradle.tooling.internal.consumer.connection.UnparameterizedBuildController.findModel(UnparameterizedBuildController.java:97)
	at org.gradle.tooling.internal.consumer.connection.NestedActionAwareBuildControllerAdapter.findModel(NestedActionAwareBuildControllerAdapter.java:31)
	at org.gradle.tooling.internal.consumer.connection.UnparameterizedBuildController.findModel(UnparameterizedBuildController.java:81)
	at org.gradle.tooling.internal.consumer.connection.NestedActionAwareBuildControllerAdapter.findModel(NestedActionAwareBuildControllerAdapter.java:31)
	at org.gradle.tooling.internal.consumer.connection.UnparameterizedBuildController.findModel(UnparameterizedBuildController.java:66)
	at org.gradle.tooling.internal.consumer.connection.NestedActionAwareBuildControllerAdapter.findModel(NestedActionAwareBuildControllerAdapter.java:31)
	at org.jetbrains.plugins.gradle.model.ProjectImportAction.execute(ProjectImportAction.java:126)

I am using Java 17, The Project Setting is 17 and gradle is up to date.

Solved this by now. Topic can be marked as closed with the takeaway that I was missing certs.