Confluence Health Check Plugin is reporting any 5.8 version is approaching End of Life. Please plan to upgrade Confluence within {1} days

Summary

When using Confluence 5.8, it is reporting a warning for End of Life date approaching without the number of days in the error string.

Steps to Reproduce

1. Start up Confluence 5.8.
2. Install the latest STP / Confluence Instance Health

Expected Results

The below error is produced:

Confluence version 5.8 is approaching End of Life. Please plan to upgrade Confluence within <number of days before End of Life date> days.

Actual Results

Confluence version 5.8 is approaching End of Life. Please plan to upgrade Confluence within {1} days.

Notes

This is a correct warning as 5.8 End of Life is approaching, however the number of days is not added to the translated String so it reports it as

.

Resolution

Update Confluence Instance Health to 2.1.9 or later.