[BUG]: Invoice pdf generation fails

[philipp1992]

Hi

using v1.17.4, when an invoice is finalized and payment processed, the file_url is null until i manually download the invoice using the Lago UI.
This works and the invoice is being downloaded. After that the file_url property is set to the correct url.
Without manually downloading the invoice, file_url is never set.

In the lago-worker i see this error:

5","lvl":"INFO","msg":"fail","ctx":{"class":"Invoices::GeneratePdfAndNotifyJob","jid":"861130f6a3d8fd3e0582eafc","elapsed":0.05}}
{"ts":"2025-01-10T19:27:11.004Z","pid":1,"tid":"7y05","lvl":"WARN","msg":"{"context":"Job raised exception","job":{"retry":0,"queue":"invoices","wrapped":"Invoices::GeneratePdfAndNotifyJob","args":[{"job_class":"Invoices::GeneratePdfAndNotifyJob","job_id":"5061a689-4833-480f-a4c2-a6b04198735b","provider_job_id":null,"queue_name":"invoices","priority":null,"arguments":[{"invoice":{"_aj_globalid":"gid://lago-api/Invoice/d3558088-8a53-40db-bd01-4564d1d794eb"},"email":false,"_aj_ruby2_keywords":["invoice","email"]}],"executions":0,"exception_executions":{},"locale":"en","timezone":"UTC","enqueued_at":"2025-01-10T19:27:10.949713189Z","scheduled_at":null,"tracing_info":{"membership":"membership/433a04d3-8bd8-4b90-8da3-2a1330f0647c"}}],"class":"ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper","jid":"861130f6a3d8fd3e0582eafc","created_at":1736537230.949872,"enqueued_at":1736537230.950109}}"}
{"ts":"2025-01-10T19:27:11.005Z","pid":1,"tid":"7y05","lvl":"WARN","msg":"TypeError: Can't load the template file. Pass a string with a path or an object that responds to 'to_str', 'path' or 'to_path'"}
{"ts":"2025-01-10T19:27:11.007Z","pid":1,"tid":"7y05","lvl":"WARN","msg":""}