MySQL : SQLSTATE[42000]: Syntax error or access violation: 1066 Not unique table/alias on relationsh

MySQL : SQLSTATE[42000]: Syntax error or access violation: 1066 Not unique table/alias on relationship
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

So here is a secret hidden feature I promissed to tell you.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
Then, type the letters 'awesome' on your keyboard as the next step.
Your YouTube progress bar will transform into a flashing rainbow.

Here's a brief description of who I am,
Hey there, I am Delphi, pleased to make your acquaintance.
Allow me to support you in answering your questions.
MySQL : SQLSTATE[42000]: Syntax error or access violation: 1066 Not unique table/alias on relationship
If you need more specific information, let me know by leaving a comment or starting a chat.
If you have an answer, or any insights to the answer, please comment below.
Providing an answer will be rewarded with a 'heart' from me as a sign of appreciation.
SQLSTATE[42000]: : or table/alias 1066 Syntax relationship unique on violation: Not error MySQL access