mySQL error with query SELECT pid, pfile FROM nucleus_plugin: Out of resources when opening file './kase/nucleus_plugin.MYD' (Errcode: 24)

mySQL error with query SELECT d.oname as name, o.ovalue as value FROM nucleus_plugin_option o, nucleus_plugin_option_desc d WHERE d.opid=-1 AND d.oid=o.oid: Out of resources when opening file './kase/nucleus_plugin_option.MYD' (Errcode: 24)

mySQL error with query SELECT oid, oname, ocontext, odef FROM nucleus_plugin_option_desc WHERE opid=-1: Out of resources when opening file './kase/nucleus_plugin_option_desc.MYD' (Errcode: 24)

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