Random PHP errors

Ever since my host provider upgraded to php 7, I’ve been getting some usual error messages in random places in the control panel. I was wondering if anyone can comment on these errors to get an idea where I need to look. Is it possible it’s a database configuration issue from older settings? Currently on version 2.11.9. Not looking to upgrade to 3 unless there’s no alternative.

This is what I get when I attempt to edit a channel field. The list of errors are much longer than this. This is just a sample.:

A PHP Error was encountered Severity: Warning Message: Declaration of FormsField_address::render_field($field, $template, $data) should be compatible with FormsField::render_field($field = Array, $template = true, $data = ”) Filename: fields/field.address.php Line Number: 0 A PHP Error was encountered Severity: Warning Message: Declaration of FormsField_address::field_settings($settings, $template) should be compatible with FormsField::field_settings($settings = Array, $template = true) Filename: fields/field.address.php Line Number: 0 A PHP Error was encountered Severity: Warning Message: Declaration of FormsField_captcha::render_field($field, $template, $data) should be compatible with FormsField::render_field($field = Array, $template = true, $data = ”) Filename: fields/field.captcha.php Line Number: 0 A PHP Error was encountered Severity: Warning Message: Declaration of FormsField_cart_pay_aunet::field_settings($settings, $template = true) should be compatible with FormsField::field_settings($settings = Array, $template = true) Filename: fields/field.cart_pay_aunet.php Line Number: 0 A PHP Error was encountered Severity: Warning Message: Declaration of FormsField_cart_total::save() should be compatible with FormsField::save($field, $data) Filename: fields/field.cart_total.php Line Number: 0 A PHP Error was encountered Severity: Warning Message: Declaration of FormsField_categories_list::render_field($field, $template, $data) should be compatible with FormsField::render_field($field = Array, $template = true, $data = ”) Filename: fields/field.categories_list.php Line Number: 0