jasper reports - JasperReportManager.fillReport not filling the Datasource - Stack Overflow

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Now I migrated my code from jdk-8 to jdk-17 and made necessary changes. However, since then, my reporting has stopped working on the web versions of my product. The desktop versions do well with the same code base and libraries. Have been on this since 1 week and the code compiles correctly but does nothing at JasperFillManager.fillReport. No exceptions. The next function in the Datasource is not called and I am stuck.

My library files used are pretty standard. Don't know if there is a conflict somewhere. Help would be appreciated. Thanks

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activation.jar                                     
commons-logging-api-1.0.2.jar  
javassist-3.29.0-GA.jar  log4j-api-2.24.3.jar
poi-ooxml-schemas-4.0.0.jar
ant-1.5.1.jar
commons-text-1.12.0.jar        
jcalendar.jar            
log4j-core-2.24.3.jar                   
poi-scratchpad-3.9-20121203.jar
avalon-framework-4.2.0.jar                         
COPY.tools.jar.HERE.txt        
jcommon-1.0.14.jar       
looks-1.2.2.jar                         
pop3.jar
barcode4j.jar                                      
core-3.3.0.jar                 
jdom-1.0.jar             
mailapi.jar                             
serializer-2.7.0.jar
bsh-1.2b6.jar                                      
curvesapi-1.04.jar             
jfreechart-1.0.11.jar    
mail.jar                                
servlet-2.2.jar
caffeine-3.1.8.jar                                 
dom4j-1.6.1.jar                
json-lib-2.1-jdk15.jar   
mysql-connector-java-3.0.17-ga-bin.jar  
servlet.jar
commons-beanutils-1.5.jar                          
ezmorph-1.0.6.jar              
json-simple-3.0.2.jar    
mysql-connector-java.jar                
slaf.jar
commons-cli-1.0.jar                                
flatlaf-2.0.jar                
junit.jar                
neatmed.jar                             
smtp.jar
commons-codec-1.10.jar                             
freemarker-2.3.33.jar          
kunststoff.jar           
ognl-3.3.5.jar                          
struts2-core-7.0.0.jar
commons-collections-3.2.2.jar                      
hibernate.jar                  
license4j-1.2.jar        
ooxml-schemas-1.3.jar                   
xalan-2.7.0.jar
commons-collections4-4.2.jar                       
hsqldb-1.61.jar                
LICENSE.ant.txt          
pdfbox-app-2.0.27.jar                   
xercesImpl.jar
commons-compress-1.18.jar                          
imap.jar                       
LICENSE.bsh.txt          
poi-3.17.jar                           
xml-apis-1.3.04.jar
commons-digester-1.3.jar                           
itext-2.1.7.jar                
LICENSEmons.txt      
poi-3.9-20121203.jar                    
xmlbeans-2.3.0.jar
commons-fileupload2-core-2.0.0-M2.jar              
itextpdf-5.1.0.jar             
LICENSE.hsqldb.txt       
poi-examples-3.9-20121203.jar           
xmlParserAPIs.jar
commons-fileupload2-jakarta-servlet6-2.0.0-M2.jar  
jakarta.servlet-api-6.1.0.jar  LICENSE.itext.txt        
poi-excelant-3.9-20121203.jar           
xwork-core-2.2.1.1.jar
commons-io-2.15.1.jar                              
jasperreports-6.20.0.jar       
LICENSE.poi.txt          
poi-ooxml-3.9-20121203.jar
commons-lang-2.3.jar                               
java-getopt-1.0.11.jar         
LICENSE.xerces.txt       
poi-ooxml-4.0.0.jar
commons-lang3-3.17.0.jar                           
javase-3.3.0.jar               
liquidlnf.jar            
poi-ooxml-schemas-3.9-20121203.jar`

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