After installing the module Odoo started showing an error every time I refreshed it. 

Error:

UncaughtPromiseError > DuplicatedKeyError 
Uncaught Promise > Cannot add 'xlsx' in this registry: it already exists 
DuplicatedKeyError: Cannot add 'xlsx' in this registry: it already exists 
    at Registry.add (https://domain.com/web/assets/176154-e0745de/web.assets_backend.min.js:1391:74)
    at https://domain.com/web/assets/176154-e0745de/web.assets_backend.min.js:16866:49
    at https://domain.com/web/assets/175400-1820845/web.assets_common.min.js:9:63
    at new Promise ()
    at processJob (https://domain.com/web/assets/175400-1820845/web.assets_common.min.js:9:9)
    at Object.processJobs (https://domain.com/web/assets/175400-1820845/web.assets_common.min.js:17:1)
    at https://domain.com/web/assets/175400-1820845/web.assets_common.min.js:10:110

Reason: 

The error you're encountering is due to an attempt to register a handler for the 'xlsx' report type more than once in the registry. The DuplicatedKeyError is raised because the 'xlsx' key already exists in the registry, and you're trying to add it again.

File: statement_report/static/src/js/action_manager.js

Fixed code:

// Check if the 'xlsx' handler is already registered

if (!registry.category('ir.actions.report handlers').contains('xlsx')) {

    //action manager for xlsx report

    registry.category('ir.actions.report handlers').add('xlsx', async (action) => {

        if (action.report_type === 'xlsx'){

            framework.blockUI();

            var def = $.Deferred();

            session.get_file({

                url : '/xlsx_report',

                data : action.data,

                success : def.resolve.bind(def),

                error : (error) => this.call('crash_manager', 'rpc_error', error),

                complete : framework.unblockUI,

            });

            return def;

        }

    })

}