Here's a copy of the error message:
We couldn't be able to fetch app users.
Session Id: f12fd6e0-496a-11ef-a1d6-61a7ca7f289f
Error stack: null {"code":"403","message":"Principal user (Id=2634c2e7-a077-ee11-8179-002248962d74, type=8, roleCount=3, privilegeCount=717, accessMode='0 Read-Write', AADObjectId='818c6074-2cb6-4163-abec-82e1cbeb866a', MetadataCachePrivilegesCount=11149, businessUnitId=0f13491d-9d75-ee11-8179-0022489784de), is missing prvReadApplicationUser privilege (Id=24db18a5-af9e-42ef-967d-84ee1f0f3b9d) on OTC=10067 for entity 'applicationuser' (LocalizedName='ApplicationUser'). context.Caller=2634c2e7-a077-ee11-8179-002248962d74. Consider adding missed privilege to one of the principal (user/team) roles.","serverErrorCode":"0x80040220","isParsedMCLError":true,"errorAnnotations":{"code":"0x80040220","message":"Principal user (Id=2634c2e7-a077-ee11-8179-002248962d74, type=8, roleCount=3, privilegeCount=717, accessMode='0 Read-Write', AADObjectId='818c6074-2cb6-4163-abec-82e1cbeb866a', MetadataCachePrivilegesCount=11149, businessUnitId=0f13491d-9d75-ee11-8179-0022489784de), is missing prvReadApplicationUser privilege (Id=24db18a5-af9e-42ef-967d-84ee1f0f3b9d) on OTC=10067 for entity 'applicationuser' (LocalizedName='ApplicationUser'). context.Caller=2634c2e7-a077-ee11-8179-002248962d74. Consider adding missed privilege to one of the principal (user/team) roles.","@Microsoft.PowerApps.CDS.ErrorDetails.ApiExceptionSourceKey":"Plugin/Microsoft.Crm.ObjectModel.CustomBusinessEntityService","@Microsoft.PowerApps.CDS.ErrorDetails.ApiStepKey":"0fa65c25-a775-ee11-8179-0022489784de","@Microsoft.PowerApps.CDS.ErrorDetails.ApiDepthKey":"1","@Microsoft.PowerApps.CDS.ErrorDetails.ApiActivityIdKey":"797caf62-330b-4767-a61d-a9a4b85db77e","@Microsoft.PowerApps.CDS.ErrorDetails.ApiPluginSolutionNameKey":"System","@Microsoft.PowerApps.CDS.ErrorDetails.ApiStepSolutionNameKey":"System","@Microsoft.PowerApps.CDS.ErrorDetails.ApiExceptionCategory":"ClientError","@Microsoft.PowerApps.CDS.ErrorDetails.ApiExceptionMessageName":"PrivilegeDenied","@Microsoft.PowerApps.CDS.ErrorDetails.ApiExceptionHttpStatusCode":"403","@Microsoft.PowerApps.CDS.ErrorDetails.0":"prvReadApplicationUser","@Microsoft.PowerApps.CDS.ErrorDetails.1":"ApplicationUser","@Microsoft.PowerApps.CDS.ErrorDetails.2":"user","@Microsoft.PowerApps.CDS.ErrorDetails.3":"2634c2e7-a077-ee11-8179-002248962d74","@Microsoft.PowerApps.CDS.ErrorDetails.4":"10067","@Microsoft.PowerApps.CDS.ErrorDetails.5":"Caller","@Microsoft.PowerApps.CDS.HelpLink":"http://go.microsoft.com/fwlink/?LinkID=398563&error=Microsoft.Crm.CrmException%3a80040220&client=platform","@Microsoft.PowerApps.CDS.InnerError.Message":"Principal user (Id=2634c2e7-a077-ee11-8179-002248962d74, type=8, roleCount=3, privilegeCount=717, accessMode='0 Read-Write', AADObjectId='818c6074-2cb6-4163-abec-82e1cbeb866a', MetadataCachePrivilegesCount=11149, businessUnitId=0f13491d-9d75-ee11-8179-0022489784de), is missing prvReadApplicationUser privilege (Id=24db18a5-af9e-42ef-967d-84ee1f0f3b9d) on OTC=10067 for entity 'applicationuser' (LocalizedName='ApplicationUser'). context.Caller=2634c2e7-a077-ee11-8179-002248962d74. Consider adding missed privilege to one of the principal (user/team) roles."},"callerStack":"Error\n at w.handleErrorResponseWithStack (https://content.powerapps.com/resource/makerx/static/js/module/59.5501005d.chunk.js:2:157309)\n at https://content.powerapps.com/resource/makerx/static/js/module/59.5501005d.chunk.js:2:4279\n at Generator.next (<anonymous>)\n at m (https://content.powerapps.com/resource/makerx/static/js/module/59.5501005d.chunk.js:2:2045)\n at o (https://content.powerapps.com/resource/makerx/static/js/module/59.5501005d.chunk.js:2:2248)\n at https://content.powerapps.com/resource/makerx/static/js/module/59.5501005d.chunk.js:2:2307\n at new Promise (<anonymous>)\n at https://content.powerapps.com/resource/makerx/static/js/module/59.5501005d.chunk.js:2:2188\n at w.fetchListInternal (https://content.powerapps.com/resource/makerx/static/js/module/59.5501005d.chunk.js:2:6039)\n at https://content.powerapps.com/resource/makerx/static/js/module/59.5501005d.chunk.js:2:4017"} null
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