Here is my class below:

global class scheduleLatestCampaigns implements Schedulable {

    global void execute(SchedulableContext SC) {
        //make a map of all accounts to their presentations
        Map<Id, List<Campaign>> accountToCampaigns = new Map<Id, List<Campaign>>();
        List<Campaign> cs = [SELECT Id, Account__c, Date_Time_of_Presentation_Schdeuled__c,Frequency__c,Meeting_Summary__c, Presenter__r.Name FROM Campaign WHERE Date_Time_of_Presentation_Schdeuled__c <= TODAY AND RecordType.Name = 'Presentation' ORDER BY Date_Time_of_Presentation_Schdeuled__c DESC];
        
        for (Campaign c : cs) {
            if (accountToCampaigns.containsKey(c.Account__c)) {
                List<Campaign> currentList = accountToCampaigns.get(c.Account__c);   
                currentList.add(c);
                accountToCampaigns.put(c.Account__c, currentList);
            } else {
                accountToCampaigns.put(c.Account__c, new List<Campaign> { c });
            }
        }
        
        List<Account> updateAccts = new List<Account>();
        //Find the latest campaign on the account that it is attached to and update the account
        for (Account acct : [SELECT Id FROM Account WHERE Id IN :accountToCampaigns.keySet()]) {
            //find all presentations that have already occured
            List<Campaign> campaigns = new List<Campaign>();
            Campaign latestCampaign=null;

            if (accountToCampaigns.containsKey(acct.Id)) {
                latestCampaign = accountToCampaigns.get(acct.Id)[0];
            }

            
            if (latestCampaign != null) {
                acct.Frequency__c = latestCampaign.Frequency__c;
                acct.Last_Presentation__c = date.newinstance(latestCampaign.Date_Time_of_Presentation_Schdeuled__c.year(),
                                                             latestCampaign.Date_Time_of_Presentation_Schdeuled__c.month(),
                                                             latestCampaign.Date_Time_of_Presentation_Schdeuled__c.day());
                acct.Meeting_Summary__c = latestCampaign.Meeting_Summary__c;
                acct.Presenter__c = latestCampaign.Presenter__r.Name;
                updateAccts.add(acct);
            }
        }
        
        update updateAccts;
    }
}


The code is breaking within this loop:
    List<Campaign> cs = [SELECT Id, Account__c, Date_Time_of_Presentation_Schdeuled__c,Frequency__c,Meeting_Summary__c, Presenter__r.Name FROM Campaign WHERE Date_Time_of_Presentation_Schdeuled__c <= TODAY AND RecordType.Name = 'Presentation' ORDER BY Date_Time_of_Presentation_Schdeuled__c DESC]

Any ideas on how to go about fixing this.