Error when scraping with 2 databases

[erifet]

Having 2 databases assigned, when I try to extract the metrics I have the following error: An error has occurred while serving metrics:

11 error (s) occurred:

• collected metric "pg_bgwriter_checkpoints_timed" {counter: <value: 73>} was collected before with the same name and label values
• collected metric "pg_bgwriter_checkpoints_req" {counter: <value: 7>} was collected before with the same name and label values
• collected metric "pg_bgwriter_checkpoint_write_time" {counter: <value: 51>} was collected before with the same name and label values
• collected metric "pg_bgwriter_checkpoint_sync_time" {counter: <value: 17>} was collected before with the same name and label values
• collected metric "pg_bgwriter_buffers_checkpoint" {counter: <value: 84>} was collected before with the same name and label values
• collected metric "pg_bgwriter_buffers_clean" {counter: <value: 0>} was collected before with the same name and label values
• collected metric "pg_bgwriter_buffers_backend" {counter: <value: 48>} was collected before with the same name and label values
• collected metric "pg_bgwriter_maxwritten_clean" {counter: <value: 0>} was collected before with the same name and label values
• collected metric "pg_bgwriter_buffers_backend_fsync" {counter: <value: 0>} was collected before with the same name and label values
• collected metric "pg_bgwriter_buffers_alloc" {counter: <value: 1516>} was collected before with the same name and label values
• collected metric "pg_bgwriter_stats_reset" {counter: <value: 1.621928245e + 09>} was collected before with the same name and label values

[Vonng]

This is a known issue about config 330-pg_bgwriter.yaml missing cluster tag. which means it will be scraped in each database. and result in duplication. fixed by https://github.com/Vonng/pg_exporter/commit/f81e436413911b4a34207077c31198ba3d08e0a2