System.InvalidOperationException: Could not find method: Process

Question

I am getting an issues while publishing in the content editor.

Here is the full error if it will help

Job started: Publish to 'web'|Items created: 0|Items deleted: 0|Items updated: 0|Items skipped: 2|#Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.InvalidOperationException: Could not find method: Process. Pipeline: /sitecore[database="SqlServer" sxaxm:require="sxaxconnect" patch:source="Test.Feature.AzureB2C.Serialization.config" unicorn:require="On" sxa:require="On" xmlns:patch="http://www.sitecore.net/xmlconfig/"]/pipelines[require="sxaxconnect" patch:source="Sitecore.LayoutService.Analytics.config"]/publish[help="Processors should derive from Sitecore.Publishing.Pipelines.Publish.PublishProcessor"]/processor[type="Test.Foundation.SitecoreExtensions.Overrides.CacheClearer, Test.Foundation.SitecoreExtensions" patch:source="Test.Foundation.SitecoreExtensions.CacheClear.config"]
       at Sitecore.Pipelines.CoreProcessor.GetMethodInfo(ProcessorObject obj, Object[] parameters)
       at Sitecore.Pipelines.CoreProcessor.GetMethod(Object[] parameters)
       at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
       at Sitecore.Pipelines.DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, String pipelineDomain, Boolean failIfNotExists)
   at Sitecore.Pipelines.DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, String pipelineDomain)
   at Sitecore.Publishing.Pipelines.Publish.PublishPipeline.Run(PublishContext context)
   at Sitecore.Publishing.Publisher.PublishWithResult()
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Sitecore.Reflection.ReflectionUtil.InvokeMethod(MethodInfo method, Object[] parameters, Object obj)
   at Sitecore.Jobs.JobRunner.RunMethod(JobArgs args)
   at (Object , Object )
   at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
   at Sitecore.Pipelines.DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, String pipelineDomain, Boolean failIfNotExists)
   at Sitecore.Pipelines.DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, String pipelineDomain)
   at Sitecore.Jobs.DefaultJob.DoExecute()
   at Sitecore.Abstractions.BaseJob.ThreadEntry(Object state)

Answer 1

If you have a closer look at the first line of your exception, you will see the answer:

Job started: Publish to 'web'|Items created: 0|Items deleted: 0|Items updated: 0|Items skipped: 2|#Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.InvalidOperationException: Could not find method: Process. Pipeline: /sitecore[database="SqlServer" sxaxm:require="sxaxconnect" patch:source="Test.Feature.AzureB2C.Serialization.config" unicorn:require="On" sxa:require="On" xmlns:patch="http://www.sitecore.net/xmlconfig/"]/pipelines[require="sxaxconnect" patch:source="Sitecore.LayoutService.Analytics.config"]/publish[help="Processors should derive from Sitecore.Publishing.Pipelines.Publish.PublishProcessor"]/processor[type="Test.Foundation.SitecoreExtensions.Overrides.CacheClearer, Test.Foundation.SitecoreExtensions" patch:source="Test.Foundation.SitecoreExtensions.CacheClear.config"]

See the sentence: publish Processors should derive from Sitecore.Publishing.Pipelines.Publish.PublishProcessor

Apparently your Test.Foundation.SitecoreExtensions.Overrides.CacheClearer does not inherit from the processor mentioned above. Make sure that it does inherit and your issue will be solved.

Answer 2

Based on my initial analysis, it appears that the issue may be related to improper index configuration. If you have performed any index customization, please review the solrConfig.xml file and ensure that the start and end tags of all nodes are correct. If no customization has been done, open the showconfig.aspx of your instance and examine all AddCrawler entries under the location node. Verify that each node has the appropriate root node.