play.api.Application$$anon$1: Execution exception[[IllegalArgumentException: [Assertion failed] - this argument is required; it must not be null]]

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If you're unit testing, you should instantiate only the service and mock the dependencies. If you're testing integration, you should add all the mocking to the configurations file.

Solutions on the web

via Spring JIRA by Tom Persons, 1 year ago
Execution exception[[IllegalArgumentException: [Assertion failed] - this argument is required; it must not be null]]
via Spring JIRA by Tom Persons, 1 year ago
Execution exception[[IllegalArgumentException: [Assertion failed] - this argument is required; it must not be null]]
via GitHub by bernd
, 2 years ago
Execution exception[[IllegalArgumentException: No enum constant org.graylog2.restclient.models.InputState.InputStateType.STOPPING]]
via GitHub by mahrton
, 1 year ago
Execution exception[[IllegalArgumentException: Illegal character in path at index 40: http://rest.db.ripe.net/ripe/inet6num/No clue what the range is..json]]
via GitHub by Spea
, 2 years ago
Execution exception[[ClassCastException: null]]
via GitHub by irshad-k
, 2 years ago
Execution exception[[NullPointerException: null]]
java.lang.IllegalArgumentException: [Assertion failed] - this argument is required; it must not be null
at org.springframework.util.Assert.notNull(Assert.java:112)
at org.springframework.data.solr.core.convert.MappingSolrConverter$SolrPropertyValueProvider.readValue(MappingSolrConverter.java:341)
at org.springframework.data.solr.core.convert.MappingSolrConverter$SolrPropertyValueProvider.readCollection(MappingSolrConverter.java:481)

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