Thank you for your question. I cannot see the errors you are seeing at this time, but it sounds like your website was hacked.
I checked your website using Sucuri sitescanner, and your version of Joomla is outdated, I highly recommend updating this software.
Essentially, outdated software is open to malware/hacks, which are addressed in updates.
If you have any further questions, feel free to post them below.
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