Automatically closed - issue fixed for 2 weeks with no activity.
SendGrid can send out email, but there are error messages on function jsonSerialize
Module installed on Drupal 9.
In SendGrid module, do "SendGrid email test".
The email is sent out successfully, but there are several error messages related to function jsonSerialize() which is used in several places. For example,
Deprecated function: Return type of SendGrid\Mail\SandBoxMode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include()
Similar errors on SendGrid\Mail\OpenTracking::jsonSerialize(), SendGrid\Mail\ClickTracking::jsonSerialize() etc.
Fixed
2.0
Code
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Automatically closed - issue fixed for 2 weeks with no activity.