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Rajesh Kumar SFRajesh Kumar SF 

Error while submit the trail challange for pd1 maintanence summer '19

System.DmlException: Insert failed. First exception on row 0; first error: CANNOT_INSERT_UPDATE_ACTIVATE_ENTITY, Lead_Email: execution of BeforeInsert

caused by: System.EmailException: SendEmail failed. First exception on row 0; first error: INVALID_EMAIL_ADDRESS, Email address is invalid: null: [toAddresses, null]

 
AbhishekAbhishek (Salesforce Developers) 
Hi,

For all the Trailhead issues please report it here,

https://trailhead.salesforce.com/en/help?support=home

So that our trailhead support engineers will look into it and get back to you.

Kindly let me know if it helps you and close your query by marking it as solved so that it can help others in the future. It will help to keep this community clean.

Regards,
​​​​​​​Salesforce Support.