entity framework 6 - EF6 upgrade issues -

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we have upgraded our application ef6. facing below error when click on 1 of button present in aspx page. page using context object.

{system.invalidoperationexception: executereader requires command have transaction when connection assigned command in pending local transaction. transaction property of command has not been initialized. @ system.data.sqlclient.sqlcommand.validatecommand(string method, boolean async) @ system.data.sqlclient.sqlcommand.runexecutereader(commandbehavior cmdbehavior, runbehavior runbehavior, boolean returnstream, string method, taskcompletionsource`1 completion, int32 timeout, task& task, boolean asyncwrite) @ system.data.sqlclient.sqlcommand.runexecutereader(commandbehavior cmdbehavior, runbehavior runbehavior, boolean returnstream, string method) @ system.data.sqlclient.sqlcommand.executereader(commandbehavior behavior, string method) @ system.data.sqlclient.sqlcommand.executedbdatareader(commandbehavior behavior) @ system.data.common.dbcommand.executereader(commandbehavior behavior) @ system.data.entity.infrastructure.interception.dbcommanddispatcher.b__c(dbcommand t, dbcommandinterceptioncontext`1 c) @ system.data.entity.infrastructure.interception.internaldispatcher`1.dispatch[ttarget,tinterceptioncontext,tresult](ttarget target, func`3 operation, tinterceptioncontext interceptioncontext, action`3 executing, action`3 executed) @ system.data.entity.infrastructure.interception.dbcommanddispatcher.reader(dbcommand command, dbcommandinterceptioncontext interceptioncontext) @ system.data.entity.internal.interceptabledbcommand.executedbdatareader(commandbehavior behavior) @ system.data.common.dbcommand.executereader(commandbehavior behavior) @ system.data.entity.core.entityclient.internal.entitycommanddefinition.executestorecommands(entitycommand entitycommand, commandbehavior behavior)}

what cause? answers appreciated.





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