Reports

AWS Upgrading to Tomcat 9.0.71 or later is what caused this to occur: https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.71

You will want to increase these settings in application.yml

spring.servlet.multipart.max-file-size=10MB
spring.servlet.multipart.max-request-size=100MB
spring.servlet.multipart.max-parts=50

In Grails 7, which uses Spring Boot 3.5.x the settings are:

server.tomcat.max-part-count
server.tomcat.max-part-header-size

If that does not work due to the older version of Grails and Spring Boot you are using, you will need to adjust the settings in tomcat's $CATALINA_HOME/conf/server.xml

https://tomcat.apache.org/tomcat-9.0-doc/config/http.html#Attributes_Common%20Attributes_maxPartCount

<Connector port="8080" protocol="HTTP/1.1"
           connectionTimeout="20000"
           redirectPort="8443"
           maxPartCount="50" />

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