API action=paraminfo says:
"warnings": { "paraminfo": { "*": "Too many values supplied for parameter 'querymodules': the limit is 50" } },
and browser console says:
TypeError: actionInfo is undefined load.php:2
in this case paraminfo should be queries in multiple batches.
Note that the limit for users with apihighlimits (eg. sysops, bots) should be 500.
Version: unspecified
Severity: normal