Mautic is not able to save mails

Your software
My Mautic version is:4.0.1
My PHP version is:7.4(domain side), 7.3.3 in( serverside)
My Database type and version is: MariaDB 10.3

Your problem
My problem is: I am new to mautic, tried to setup through following some tutorials.

✓ It sending test mail.

✓ Able to upload contact or emails addresses through csv

✓ Able to create segments

:x: Email not created

Most of the time the mail is not saving.( tried to save for 100 times it saved for only 3-4 times )

But the mail is getting delivered,

Here are the cron job from Cpanel

Where should i share my concern to get some help.

These errors are showing in the log: 1

Steps I have tried to fix the problem: Need guide to follow!

Hi, emails are autosaving in the builder.
If not, then plz check if you have any errors in your javascript console in your browser.