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vishal yadav 86 Why is this error displaying? How to resolve this?
Visualforce Error Help for this Page System.EmailException: SendEmail failed. First exception on row 5; first error: SINGLE_EMAIL_LIMIT_EXCEEDED, Email limit exceeded: [] Error is in expression '{!sendEmail}' in component <apex:commandButton> in page acnt
In developer edition orgs we can only send 15 email per day.May be that limit has been exceeded here.
Please refer below link which might help you in this.
https://salesforce.stackexchange.com/questions/130447/how-can-be-avoided-error-single-email-limit-exceeded-email-limit-exceeded-if-nee
https://help.salesforce.com/articleView?id=000323568&type=1&mode=1
Hope this helps you
Let me know if this helps you. Kindly mark it as solved so that it may help others in future.
Thanks and Regards