To Correct
transitive verb, godan verb
This word is made up of a kanji with some hiragana attached, ending in an う sound. That means this word is a verb. The kanji itself means "correct," so what is the verb form of that? It would be to correct.
ただす
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you: After you correct something for someone, you yell out ta-da (ただ) very excitedly. Go ahead and imagine yourself doing this a few times to help you to remember.
タスクはシステムエラーを正すことです。
My task is to correct system errors.
左右のロゴのポジションを正した。
I corrected the position of the logos on left and right.
あの人はエラーをひたすら正すプログラマーです。
That person is a programmer who's dedicated for correcting errors.