Hi, that was the problem on my moodle site too.
I do the following steps to solve it.
SELECT * FROM mdl_role_capabilities WHERE capability LIKE '%moodle/site%doany%'
this leeds to 3 entries:
| id | contextid | roleid | capability | permission | timemodified | modifierid |
|---|---|---|---|---|---|---|
| 7 | 1 | 1 | moodle/site:doanything | 1 | 1166636368 | 0 |
| 19828 | 9997 | 221 | moodle/site:doanything | 1 | 1201871265 | 2 |
| 21038 | 8813 | 5 | moodle/site:doanything |
1 | 1209382633 | 28 |
(timemodified is maybe false, cause I changed the entry with roleid 5 often to reproduce the effects).
I do:
UPDATE mdl_role_capabilities SET capability ='moodle/site:doanything STRANGE error in switch role to student' WHERE id=21038
that solves the problem, but does not explain anything.
If I do the select in a fresh install, then I get:
| id | contextid | roleid | capability | permission | timemodified | modifierid |
|---|---|---|---|---|---|---|
| 8 | 1 | 1 | moodle/site:doanything | 1 | 1288857153 | 0 |
I don't now, if I have to change the entry with ID 19828
does anybody understand the system.
Thanks to Sergio - he gives the most important hint for me.