3674172 - Sending email fails - can not get a valid access token to send email for renewToken

When sending email from Commerce you can observe error:

can not get a valid access token to send email for renewToken

com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize value of type `java.lang.String` from Array value (token `JsonToken.START_ARRAY`) at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1, column: 312]

com.fasterxml.jackson.databind.DeserializationContext.reportInputMismatch
com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken
com.fasterxml.jackson.databind.deser.std.StdDeserializer._deserializeFromArray
com.fasterxml.jackson.databind.deser.std.StringDeserializer.deserialize
com.fasterxml.jackson.databind.deser.std.StringDeserializer.deserialize
com.fasterxml.jackson.databind.deser.std.MapDeserializer._readAndBindStringKeyMap
com.fasterxml.jackson.databind.deser.std.MapDeserializer.deserialize
com.fasterxml.jackson.databind.deser.std.MapDeserializer.deserialize
com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue
com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose
com.fasterxml.jackson.databind.ObjectMapper.readValue
de.hybris.platform.acceleratorservices.email.impl.DefaultEmailService.renewToken
de.hybris.platform.acceleratorservices.email.impl.DefaultEmailService.getValidToken
de.hybris.platform.acceleratorservices.email.impl.DefaultEmailService.sendEmailWithOAuth2
de.hybris.platform.acceleratorservices.email.impl.DefaultEmailService.sendWithModernAuth
de.hybris.platform.acceleratorservices.email.impl.DefaultEmailService.send
de.hybris.platform.acceleratorservices.process.email.actions.SendEmailAction.executeAction
...

SAP Commerce Cloud

mismatchedinputexception, serialization, smtp, sending email , KBA , CEC-SCC-PLA-PL , Platform , Problem