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0 - call_user_func_array(): Argument #1 ($callback) must be a valid callback, cannot access protected method plgVmCustomSpiral_freedownload::plgVmDeclarePluginParamsCustomVM3()

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call_user_func_array(): Argument #1 ($callback) must be a valid callback, cannot access protected method plgVmCustomSpiral_freedownload::plgVmDeclarePluginParamsCustomVM3()