Excel Report Builder Add-on: Template Upload Issue

Dear Community,

After installing the "Excel Reports Builder for Creatio" add-on and removing the APK and JAR extensions in the system settings as guided by this tutorial (Failure to Upload Template for Excel Report in Creatio and a Solution), I attempted to upload my Excel template. Unfortunately, I received an "Empty Response" message.

To investigate further, I compiled all packages, which resulted in the attached compilation errors.

Any advice on how to address this issue would be greatly appreciated.

Thank you in advance for your assistance.