The password is embedded in the URL you were sent. If you are getting this error message means you accessed the meeting incorrectly. To access the meeting, click on the link you were given.
Zoom links look like this: https://us02web.zoom.us/j/81105172932?pwd=WGFOTXhPUjlsSWJsNk1CeUxwNHQzdz09 (this is not your link or your password. this is an example)
If the link you have looks like this (note the missing password at the end ): https://us02web.zoom.us/j/8110517 you cannot copy and paste the link, you must click on it.