1267 Illegal Mix Of Collations (utf8_general_ci,IMPLICIT) - Question | JoomShaper
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1267 Illegal Mix Of Collations (utf8_general_ci,IMPLICIT)

Kurt Wündsch

Kurt Wündsch

Template 2 years ago

Hello Joomshaper team! If a menu item in the alias on the Helix Ultimate contains a special character such as ä, ö, ü, the system writes:

1267 Illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8mb4_general_ci,COERCIBLE) for operation '='

Is this a template or a general Joomla4 problem? Thanks for brief information. Kurt

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1 Answers
Paul Frankowski
Paul Frankowski
Accepted Answer
Senior Staff 2 years ago #129512

Hi Kurt,

but how it's possible that you can even use "ä, ö, ü" in menu item alias? Joomla by default changes into "ae oe ue". Ok, I suppose that you enabled "Unicode Aliases" in Global Configuration.


  1. Why you cannot use just "a o u" in menu item alias ? less worries, unless you have to.
  2. Check on different template (Casiopeia) and then you will know. But Yes, and I made confirm/deny test on Helix Ultimate and it's possible. But you can repeat my test. I suggest making research on forum.joomla.org - to get know what you have to change with database.

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