End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Logger#error!

error!

# File tmp/rubies/ruby-3.0.5/lib/logger.rb, line 331
def error!; self.level = ERROR; end

Sets the severity to ERROR.

See also #error #error? #debug? #fatal also in 3.4 · 3.3 · 3.2 · 3.1