First Error In The Log
You're building a lightweight log viewer. Each entry in `lines` is a string formatted as "LEVEL: message" (LEVEL is one of INFO, WARNING, ERROR, followed by ": " and the message text). Return the message of the first line whose level is ERROR (without the "ERROR: " prefix). If there is no such line,
You're building a lightweight log viewer. Each entry in `lines` is a string formatted as "LEVEL: message" (LEVEL is one of INFO, WARNING, ERROR, followed by ": " and the message text). Return the message of the first line whose level is ERROR (without the "ERROR: " prefix). If there is no such line,
