[Bug] Index out of bounds (IndexError)

[rodlord5000]

Describe the bug
Receiving an Index out of bounds (IndexError) when trying to import a YouTube subscription list CSV as per the instructions at https://docs.invidious.io/export-youtube-subscriptions/

Steps to Reproduce

Go to Subscriptions -> Manage Subscriptions -> Import/Export -> Import YouTube subscriptions, select the file you just downloaded and click on Import

Logs
Title: Index out of bounds (IndexError)
Date: 2023-07-19T09:37:21Z
Route: /data_control?referer=%2Ffeed%2Fpopular
Version: 2023.07.16-69e2eac @ master

Backtrace

Index out of bounds (IndexError)
  from /usr/share/crystal/src/json/parser.cr:117:5 in 'update_data_control'
  from lib/kemal/src/kemal/route.cr:12:9 in '->'
  from src/invidious/helpers/handlers.cr:30:37 in 'call'
  from /usr/share/crystal/src/http/server/handler.cr:28:7 in 'call'
  from /usr/share/crystal/src/http/server/handler.cr:28:7 in 'call_next'
  from lib/kemal/src/kemal/filter_handler.cr:21:7 in 'call'
  from /usr/share/crystal/src/http/server/handler.cr:28:7 in 'call_next'
  from /usr/share/crystal/src/http/server/handler.cr:28:7 in 'call_next'
  from /usr/share/crystal/src/http/server/handler.cr:28:7 in 'call_next'
  from /usr/share/crystal/src/http/server/handler.cr:28:7 in 'call_next'
  from /usr/share/crystal/src/http/server/handler.cr:28:7 in 'call_next'
  from src/ext/kemal_static_file_handler.cr:112:11 in 'call'
  from /usr/share/crystal/src/http/server/handler.cr:28:7 in 'call'
  from /usr/share/crystal/src/http/server/handler.cr:28:7 in 'call'
  from /usr/share/crystal/src/http/server/handler.cr:28:7 in 'call_next'
  from lib/kemal/src/kemal/init_handler.cr:12:7 in 'process'
  from /usr/share/crystal/src/http/server.cr:500:5 in '->'
  from /usr/share/crystal/src/fiber.cr:146:11 in 'run'
  from ???

[unixfox]

Probably a duplicate of #3593