Dropwizard logging appender error - dropwizard

Question

I have a dropwizard service which has been running for months with logging to console. I wanted to now log to file so I added the following extra lines to my config file:
logging:
# Permit DEBUG, INFO, WARN and ERROR messages to be logged by appenders.
level: INFO
appenders:
- type: file
currentLogFilename: ./log/taskiir-service.log
threshold: ALL
archive: true
archivedLogFilenamePattern: ./log/taskiir-service-%d.log
archivedFileCount: 5
timeZone: UTC
However when I try to run the service now I get the following error:
io.dropwizard.configuration.ConfigurationParsingException: taskiir-service.yml has an error:
* Failed to parse configuration at: logging.appenders.[0]; Could not resolve type id 'file' as a subtype of [simple type, class io.dropwizard.logging.AppenderFactory<ch.qos.logback.classic.spi.ILoggingEvent>]: known type ids = [] (for POJO property 'appenders')
at [Source: UNKNOWN; line: -1, column: -1] (through reference chain: com.anton.taskiirservice.TaskiirService.TaskiirAPIConfiguration["logging"]->io.dropwizard.logging.DefaultLoggingFactory["appenders"]->java.util.ArrayList[0])
at io.dropwizard.configuration.ConfigurationParsingException$Builder.build(ConfigurationParsingException.java:276)
at io.dropwizard.configuration.BaseConfigurationFactory.build(BaseConfigurationFactory.java:157)
at io.dropwizard.configuration.BaseConfigurationFactory.build(BaseConfigurationFactory.java:92)
at io.dropwizard.cli.ConfiguredCommand.parseConfiguration(ConfiguredCommand.java:124)
at io.dropwizard.cli.ConfiguredCommand.run(ConfiguredCommand.java:72)
at io.dropwizard.cli.Cli.run(Cli.java:75)
at io.dropwizard.Application.run(Application.java:93)
at com.anton.taskiirservice.TaskiirService.TaskiirAPIApplication.main(TaskiirAPIApplication.java:59)
Caused by: com.fasterxml.jackson.databind.exc.InvalidTypeIdException: Could not resolve type id 'file' as a subtype of [simple type, class io.dropwizard.logging.AppenderFactory<ch.qos.logback.classic.spi.ILoggingEvent>]: known type ids = [] (for POJO property 'appenders')
at [Source: UNKNOWN; line: -1, column: -1] (through reference chain: com.anton.taskiirservice.TaskiirService.TaskiirAPIConfiguration["logging"]->io.dropwizard.logging.DefaultLoggingFactory["appenders"]->java.util.ArrayList[0])
at com.fasterxml.jackson.databind.exc.InvalidTypeIdException.from(InvalidTypeIdException.java:43)
at com.fasterxml.jackson.databind.DeserializationContext.invalidTypeIdException(DeserializationContext.java:1615)
at com.fasterxml.jackson.databind.DeserializationContext.handleUnknownTypeId(DeserializationContext.java:1186)
at com.fasterxml.jackson.databind.jsontype.impl.TypeDeserializerBase._handleUnknownTypeId(TypeDeserializerBase.java:291)
at com.fasterxml.jackson.databind.jsontype.impl.TypeDeserializerBase._findDeserializer(TypeDeserializerBase.java:162)
at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer._deserializeTypedForId(AsPropertyTypeDeserializer.java:113)
at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer.deserializeTypedFromObject(AsPropertyTypeDeserializer.java:97)
at com.fasterxml.jackson.databind.deser.AbstractDeserializer.deserializeWithType(AbstractDeserializer.java:254)
at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:287)
at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:244)
at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:27)
at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:519)
at com.fasterxml.jackson.module.afterburner.deser.SettableObjectMethodProperty.deserializeAndSet(SettableObjectMethodProperty.java:47)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:287)
at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:189)
at com.fasterxml.jackson.module.afterburner.deser.SuperSonicBeanDeserializer.deserialize(SuperSonicBeanDeserializer.java:120)
at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer._deserializeTypedUsingDefaultImpl(AsPropertyTypeDeserializer.java:178)
at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer.deserializeTypedFromObject(AsPropertyTypeDeserializer.java:105)
at com.fasterxml.jackson.databind.deser.AbstractDeserializer.deserializeWithType(AbstractDeserializer.java:254)
at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:129)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:251)
at com.fasterxml.jackson.module.afterburner.deser.SuperSonicBeanDeserializer.deserialize(SuperSonicBeanDeserializer.java:155)
at com.fasterxml.jackson.databind.ObjectMapper._readValue(ObjectMapper.java:3972)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2264)
at io.dropwizard.configuration.BaseConfigurationFactory.build(BaseConfigurationFactory.java:128)
... 6 more
Any ideas most welcome, thanks.
Here is the POM file (using Eclipse):
<?xml version="1.0" encoding="UTF-8"?>
<project
xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<prerequisites>
<maven>3.0.0</maven>
</prerequisites>
<groupId>com.anton.taskiirservice</groupId>
<artifactId>TaskiirService</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>TaskiirAPI</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<dropwizard.version>1.2.2</dropwizard.version>
<mainClass>com.anton.taskiirservice.TaskiirService.TaskiirAPIApplication</mainClass>
<swagger.version>1.5.3-M1</swagger.version>
<jdk.version>1.8</jdk.version>
</properties>
<dependencies>
<dependency>
<groupId>io.dropwizard</groupId>
<artifactId>dropwizard-core</artifactId>
<version>${dropwizard.version}</version>
</dependency>
<dependency>
<groupId>io.dropwizard</groupId>
<artifactId>dropwizard-jdbi</artifactId>
<version>${dropwizard.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.39</version>
</dependency>
<dependency>
<groupId>com.wordnik</groupId>
<artifactId>swagger-annotations</artifactId>
<version>${swagger.version}</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>transport</artifactId>
<version>5.3.2</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.7</version>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-shade-plugin</artifactId>
<version>2.4.1</version>
<configuration>
<createDependencyReducedPom>true</createDependencyReducedPom>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>${mainClass}</mainClass>
</transformer>
</transformers>
<!-- exclude signed Manifests -->
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>${mainClass}</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>2.6</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<mainClass>${mainClass}</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-source-plugin</artifactId>
<version>2.4</version>
<executions>
<execution>
<id>attach-sources</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.10.3</version>
<executions>
<execution>
<id>attach-javadocs</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<reporting>
<plugins>
<plugin>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>2.8.1</version>
<configuration>
<dependencyLocationsEnabled>false</dependencyLocationsEnabled>
<dependencyDetailsEnabled>false</dependencyDetailsEnabled>
</configuration>
</plugin>
<plugin>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.10.3</version>
</plugin>
</plugins>
</reporting>
</project>