Can't Open Project after upgrade IDE to 2025.1.5
Here is the IDE Internal Error which says: Exception is unkown plugins.
project loading failed
java.lang.AbstractMethodError: Receiver class com.intellij.platform.project.backend.BackendProjectEntitiesStorage does not define or inherit an implementation of the resolved method 'abstract java.lang.Object createEntityImpl(com.intellij.openapi.project.Project, kotlin.coroutines.Continuation)' of abstract class com.intellij.platform.project.ProjectEntitiesStorage. at com.intellij.platform.project.ProjectEntitiesStorage$createEntity$2.invokeSuspend(ProjectEntitiesStorage.kt:38) at com.intellij.platform.project.ProjectEntitiesStorage$createEntity$2.invoke(ProjectEntitiesStorage.kt) at com.intellij.platform.project.ProjectEntitiesStorage$createEntity$2.invoke(ProjectEntitiesStorage.kt) at com.intellij.platform.kernel.ApiKt$withKernel$2.invokeSuspend(api.kt:24) at com.intellij.platform.kernel.ApiKt$withKernel$2.invoke(api.kt) at com.intellij.platform.kernel.ApiKt$withKernel$2.invoke(api.kt) at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:62) at kotlinx.coroutines.BuildersKt__Builders_commonKt.withContext(Builders.common.kt:163) at kotlinx.coroutines.BuildersKt.withContext(Unknown Source) at com.intellij.platform.kernel.ApiKt.withKernel(api.kt:22) at com.intellij.platform.project.ProjectEntitiesStorage.createEntity(ProjectEntitiesStorage.kt:34) at com.intellij.openapi.project.impl.ProjectManagerImplKt.initProject(ProjectManagerImpl.kt:1314) at com.intellij.openapi.project.impl.ProjectManagerImplKt.access$initProject(ProjectManagerImpl.kt:1) at com.intellij.openapi.project.impl.ProjectManagerImpl.prepareProject(ProjectManagerImpl.kt:923) at com.intellij.openapi.project.impl.ProjectManagerImpl.access$prepareProject(ProjectManagerImpl.kt:103) at com.intellij.openapi.project.impl.ProjectManagerImpl$doOpenAsync$2$1$3.invokeSuspend(ProjectManagerImpl.kt:653) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104) at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:608) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:873) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:763) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:750)

I disable this plugins and restart the IDE but not solve
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See if it helps to apply solutions from this help article: https://youtrack.jetbrains.com/articles/SUPPORT-A-58