The initial instance or occurrence of a mistake or malfunction characterized by an unexpected or problematic situation.

प्रथम त्रुटि घटना

English Usage: "The system crashed due to the first error event during startup."

Hindi Usage: "सिस्टम स्टार्टअप के दौरान पहली गलती की स्थिति के कारण क्रैश हो गया।"