Error message

• Notice: Undefined index: page in saier_vaccineccenter() (line 293 of /usr/home/hyu4552580001/htdocs/sites/all/modules/custom/saier/saier.module).
• Warning: Illegal string offset 'pager' in saier_block_view() (line 946 of /usr/home/hyu4552580001/htdocs/sites/all/modules/custom/saier/saier.module).
• Warning: Illegal string offset 'menu' in saier_block_view() (line 947 of /usr/home/hyu4552580001/htdocs/sites/all/modules/custom/saier/saier.module).
• Error: Cannot unset string offsets in saier_block_view() (line 948 of /usr/home/hyu4552580001/htdocs/sites/all/modules/custom/saier/saier.module).