My Brother printer displays a 'toner empty' or 'ink empty' error, but I just replaced the cartridge. What Reddit solutions address this?

Ensure you've removed all protective seals from the new toner or ink cartridge. Reinstall the cartridge, making sure it clicks securely into place. Sometimes, the printer needs to be reset after a cartridge replacement; consult your printer's manual for the specific reset procedure. Examine the cartridge chip for any damage or debris. If the issue continues, try using a different, genuine Brother cartridge, as third-party cartridges can sometimes cause problems. Reddit posts often suggest firmware updates as a solution for these issues.