Will leaving my job for mental health reasons ruin my professional reputation?

I work as a web dev/designer for a digital marketing agency and I am incredibly burnt out. A few months ago there were some legal issues that came up that I was asked to resolve. Since then my life has been hell.

I feel anxious all the time about making mistakes. About a month ago I asked to speak with my boss because I wanted to know if I was causing issues within the company. During this chat I broke down and cried and he reassured me I was doing well.

Fast forward to this past week. I was asked to design tshirts, business cards, make social media posts for a company event coming up. I was given a week to complete these. I also have my other usual web dev tasks like building new sites, making updates for the sales team, etc. I also was asked to have a complete redesign of the company website done by April.

I was feeling so overwhelmed and asked my boss if I could have focused time to work on the company site because I get pulled into big tasks that take a lot of time to complete. He told me that I can work on it a few hours a day but I still need to do the usual work. I broke down again and basically told him this was a lot of work. He asked me if I had depression and in the end I disclosed that I have struggled with anxiety and depression in the past.

Well since then the sales and production team have been very stand-offish and passive aggressive. On Friday at 11am they asked me to completely redo one of their sites and write new content so they could get approval for Adsense. The due date? Monday morning. I decided to just use a free template because that was the only feasible way I would get it done in time.

I honestly just want to quit my job but Im terrified that I have ruined this company as a future reference because of my past breakdowns. I plan to look for new jobs but Im honestly dreading going back to the office. I just dont know what to do. Ive been working so hard and I feel like I ruined my professional reputation for breaking down in front of my boss.