CPU Average Load

This web server is running on a Raspberry Pi (Model B) powered 100% by Solar energy
 Raspberry Pi

CPU Average Load every 5 minutes
Last Updated: Sunday, November 28, 12:30:52

[ERROR: invalid format string '' (should match '^(?:[^%]+|%%)*%s(?:[^%]+|%%)*%lu(?:[^%]+|%%)*%lu(?:[^%]+|%%)*$')]
[ERROR: invalid format string '' (should match '^(?:[^%]+|%%)*%s(?:[^%]+|%%)*%lu(?:[^%]+|%%)*%lu(?:[^%]+|%%)*$')]
[ERROR: invalid format string '' (should match '^(?:[^%]+|%%)*%s(?:[^%]+|%%)*%lu(?:[^%]+|%%)*%lu(?:[^%]+|%%)*$')]
[ERROR: invalid format string '' (should match '^(?:[^%]+|%%)*%s(?:[^%]+|%%)*%lu(?:[^%]+|%%)*%lu(?:[^%]+|%%)*$')]
[ERROR: invalid format string '' (should match '^(?:[^%]+|%%)*%s(?:[^%]+|%%)*%lu(?:[^%]+|%%)*%lu(?:[^%]+|%%)*$')]