Symbol's function definition is void: make-closure

[AtomicNess123]

• Emacs version: 27.2
• Operating system: Catalina OS
• Search command(ag, pt, ack etc) and version: last
• Last value of helm-ag--lasta-command: nil

Actual behavior

After installing last version I get following warnings:

In helm-ag--init:
helm-ag.el:314:6:Warning: `helm-attrset' is an obsolete function (as of
    3.7.0); use `helm-set-attr' instead.
helm-ag.el:318:49:Warning: `helm-attr' is an obsolete function (as of 3.7.0);
    use `helm-get-attr' instead.

In helm-ag--search-this-file-p:
helm-ag.el:389:8:Warning: `helm-attr' is an obsolete function (as of 3.7.0);
    use `helm-get-attr' instead.

In helm-ag--candidate-transformer:
helm-ag.el:481:12:Warning: `helm-attr' is an obsolete function (as of 3.7.0);
    use `helm-get-attr' instead.

In helm-ag--up-one-level:
helm-ag.el:918:15:Warning: `helm-attrset' is an obsolete function (as of
    3.7.0); use `helm-set-attr' instead.

In helm-ag-this-file:
helm-ag.el:932:6:Warning: `helm-attrset' is an obsolete function (as of
    3.7.0); use `helm-set-attr' instead.
helm-ag.el:933:19:Warning: `helm-attrset' is an obsolete function (as of
    3.7.0); use `helm-set-attr' instead.

In helm-ag:
helm-ag.el:951:8:Warning: `helm-attrset' is an obsolete function (as of
    3.7.0); use `helm-set-attr' instead.
helm-ag.el:951:43:Warning: `helm-attrset' is an obsolete function (as of
    3.7.0); use `helm-set-attr' instead.

In helm-do-ag--helm:
helm-ag.el:1315:6:Warning: `helm-attrset' is an obsolete function (as of
    3.7.0); use `helm-set-attr' instead.

When using any helm-ag function I am getting:

Symbol's function definition is void: make-closure.

Not sure why this happens. Maybe worth fixing these obsolete functions?