Receiving Error code 429 and 500 on Coinbase Pro endpoints

Above is a screenshot of my logs from earlier this month. I was logging this information specifically because I was receiving mysterious 429 codes and I wanted to ensure my code was not the source of the issue. I sent out no more than 1 request per second and this is still how my code operates today. If it is true that I am allowed 10 requests per second (15 in burst), there is no explanation on my end why I am receiving a 429 rate limit error.