Not able to create certain possible indexes in kibana

Hi Team,
I am using KIBANA UI to create index patterns for my work but getting error while creating some of them. Although we have matching indices it's not going to the step 2 where we have options to select @timestamp data types. When I create it without any data type its showing up but not working. Please help me with some suggestions?
error:

An internal server error occurred

Less Info
OK
Error: An internal server error occurred
at mysite/kibana/bundles/commons.bundle.js:11:337467
at processQueue (mysite/kibana/built_assets/dlls/vendors.bundle.dll.js:293:199687)
at mysite/kibana/built_assets/dlls/vendors.bundle.dll.js:293:200650
at Scope.$digest (mysite/kibana/built_assets/dlls/vendors.bundle.dll.js:293:210412)
at Scope.$apply (mysite/kibana/built_assets/dlls/vendors.bundle.dll.js:293:213219)
at done (mysite/kibana/built_assets/dlls/vendors.bundle.dll.js:293:132717)
at completeRequest (mysite/kibana/built_assets/dlls/vendors.bundle.dll.js:293:136329)
at XMLHttpRequest.requestLoaded (mysite/kibana/built_assets/dlls/vendors.bundle.dll.js:293:135225)